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TOPIC: Running rich??
#55854
Running rich?? 1 Year, 1 Month ago Karma: 12
I swapped my plugs out a couple of weeks ago and they were carbon fouled. Just checked the new set I put in and they're in the same condition.


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Symptoms:

1)The car has a miss when cold-goes away after 10 mins driving.

2) Idles at 1200rpm when warm.

There is no smell of fuel/black smoke and the car gets good mileage despite these issues.

Anyone have tips as to what I should check?
Mister Two
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Last Edit: 2013/03/22 17:13 By Mister Two.

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#55869
Re: Running rich?? 1 Year, 1 Month ago Karma: 73
distributer cap and leads id say. the spark plug in the pic looks fine
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#55874
Re: Running rich?? 1 Year, 1 Month ago Karma: 12
Thanks cozzy-can always depend on you for a reply
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#55875
Re: Running rich?? 1 Year, 1 Month ago Karma: 12
Thanks cozzy-can always depend on you for a reply

Should the top of the plug be black like that?
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Last Edit: 2013/03/22 20:24 By Mister Two.

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#55876
Re: Running rich?? 1 Year, 1 Month ago Karma: 48
Its kinda hard to see what ur spark plug is like in that pic because ur camera is focusing on the background.
from what i can make out it looks ok to me.
Check this pic out and see which one of these it matches best:

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#55877
Re: Running rich?? 1 Year, 1 Month ago Karma: 12
Yea my photography isn't great

From the picture guide you put up my plugs look fine but Im still inclined to think it fits the carbon fouled description as there is a.black sooty buildup. although this is nowhere near as bad as the one in the picture above.

Chasing this miss has me running in circles
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#55878
Re: Running rich?? 1 Year, 1 Month ago Karma: 12
Yea my photography isn't great

From the picture guide you put up my plugs look fine but Im still inclined to think it fits the carbon fouled description as there is a.black sooty buildup. although this is nowhere near as bad as the one in the picture above.

Chasing this miss has me running in circles
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#56010
Re: Running rich?? 1 Year ago Karma: 48
what is your spark plug gap??
Is ur car a turbo?
Try using a bit of sandpaper to clean off the contacts on the spark plugs and set the gap to 0.6mm, also get a timing gun and set your timing.
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#56017
Re: Running rich?? 1 Year ago Karma: 20
That plug looks fine, it could be the coolant temp sensor that sends the signal to the ECU.

You can find the method of testing it in these articles.....
www.autoshop101.com/
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#56019
Re: Running rich?? 1 Year ago Karma: 12
No its a na. I thought the plugs came preset but il check.

Im planning on getting the timing checked next, just waiting on anto to fit me in. Don't know if Im competent to do it myself!
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#56022
Re: Running rich?? 1 Year ago Karma: 87
spla300 wrote:
what is your spark plug gap??
Is ur car a turbo?
Try using a bit of sandpaper to clean off the contacts on the spark plugs and set the gap to 0.6mm, also get a timing gun and set your timing.


though the gapping of sparkplugs went out with the indians
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#56024
Re: Running rich?? 1 Year ago Karma: 12
weeJohn wrote:
That plug looks fine, it could be the coolant temp sensor that sends the signal to the ECU.

You can find the method of testing it in these articles.....
www.autoshop101.com/


Yep that's on my list also.

1) ignition timing
2) coolant temp sensor
3) compression test ( i bought the engine off an mr2.ie member who compression tested it but want to check it anyway)

If its none of the above, Im just giving up
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#56025
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
weeJohn wrote:
That plug looks fine, it could be the coolant temp sensor that sends the signal to the ECU.

You can find the method of testing it in these articles.....
www.autoshop101.com/


Yep that's on my list also.

1) ignition timing
2) coolant temp sensor
3) compression test ( i bought the engine off an mr2.ie member who compression tested it but want to check it anyway)

If its none of the above, Im just giving up


Have you checked if theres any fault codes stored on the Check Engine Light?

paperclip E1 into TE1 and turn ignition to ACC
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#56026
Re: Running rich?? 1 Year ago Karma: 48
The stock spark plug gap is set to 0.9mm.
Mine is turbo and if i leave the gap at .9mm its like it gets blown out when i reach a certain amount of psi on boost the car just wont pick up speed it feels like im hitting the limiter, but if i try keep the boost low it drives as normal, so .6mm works fine for me.
Since yours is na try a .7mm gap maybe. do some testing to find out what your perfect gap is for the engine.
Get a timing gun on ebay:
This is the one i got, works perfect, and very cheap.
www.ebay.com/itm/Automotive-Timing-Gun-W...794f1ae6&vxp=mtr
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#56028
Re: Running rich?? 1 Year ago Karma: 12
eringobragh wrote:
Mister Two wrote:
weeJohn wrote:
That plug looks fine, it could be the coolant temp sensor that sends the signal to the ECU.

You can find the method of testing it in these articles.....
www.autoshop101.com/


Yep that's on my list also.

1) ignition timing
2) coolant temp sensor
3) compression test ( i bought the engine off an mr2.ie member who compression tested it but want to check it anyway)

If its none of the above, Im just giving up




Have you checked if theres any fault codes stored on the Check Engine Light?

paperclip E1 into TE1 and turn ignition to ACC


Yea checked that alresdy-no fault codes at all
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#56029
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
eringobragh wrote:
Mister Two wrote:
weeJohn wrote:
That plug looks fine, it could be the coolant temp sensor that sends the signal to the ECU.

You can find the method of testing it in these articles.....
www.autoshop101.com/


Yep that's on my list also.

1) ignition timing
2) coolant temp sensor
3) compression test ( i bought the engine off an mr2.ie member who compression tested it but want to check it anyway)

If its none of the above, Im just giving up




Have you checked if theres any fault codes stored on the Check Engine Light?

paperclip E1 into TE1 and turn ignition to ACC


Yea checked that alresdy-no fault codes at all


What plugs are you running? Its an NA I take it?
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#56030
Re: Running rich?? 1 Year ago Karma: 87
spla300 wrote:
The stock spark plug gap is set to 0.9mm.
Mine is turbo and if i leave the gap at .9mm its like it gets blown out when i reach a certain amount of psi on boost the car just wont pick up speed it feels like im hitting the limiter, but if i try keep the boost low it drives as normal, so .6mm works fine for me.
Since yours is na try a .7mm gap maybe. do some testing to find out what your perfect gap is for the engine.
Get a timing gun on ebay:
This is the one i got, works perfect, and very cheap.
www.ebay.com/itm/Automotive-Timing-Gun-W...794f1ae6&vxp=mtr


I didn't need to gap mine as I think they were on the money out of the box as regards gapping was concerned
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#56031
Re: Running rich?? 1 Year ago Karma: 12
I have the Ngk bkr6ep8 which are what Toyota recommend for that engine. Yea its a na
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#56035
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
I have the Ngk bkr6ep8 which are what Toyota recommend for that engine. Yea its a na

I was on the fence about what to get myself and mixed reviews from both side but in the end I went for the iridium tipped plugs myself...not saying that the plugs are the issue in your case

from mr2oc.co.uk:

NGK Performance - BKR6EIX

The BKR6EIX is part of NGK's IX series of Iridium tipped spark plugs. These use a 0.6mm diameter Iridium tipped center electrode, and further enhances the main benefits of using the Platinum tipped spark plugs.

Iridium is around 8 times stronger than Platinum, and so the use of a 0.6mm diameter center electrode is possible, meaning (again) stronger spark and less strain on the ignition systems. The Iridium tipped spark plugs can be expected to last up to 60,000 miles depending on engine conditions, but do pass their optimum service life before this time.
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#56036
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
I have the Ngk bkr6ep8 which are what Toyota recommend for that engine. Yea its a na

I was on the fence about what to get myself and mixed reviews from both side but in the end I went for the iridium tipped plugs myself...not saying that the plugs are the issue in your case

from mr2oc.co.uk:

NGK Performance - BKR6EIX

The BKR6EIX is part of NGK's IX series of Iridium tipped spark plugs. These use a 0.6mm diameter Iridium tipped center electrode, and further enhances the main benefits of using the Platinum tipped spark plugs.

Iridium is around 8 times stronger than Platinum, and so the use of a 0.6mm diameter center electrode is possible, meaning (again) stronger spark and less strain on the ignition systems. The Iridium tipped spark plugs can be expected to last up to 60,000 miles depending on engine conditions, but do pass their optimum service life before this time.
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#56043
Re: Running rich?? 1 Year ago Karma: 12
eringobragh wrote:
Mister Two wrote:
I have the Ngk bkr6ep8 which are what Toyota recommend for that engine. Yea its a na

I was on the fence about what to get myself and mixed reviews from both side but in the end I went for the iridium tipped plugs myself...not saying that the plugs are the issue in your case

from mr2oc.co.uk:

NGK Performance - BKR6EIX

The BKR6EIX is part of NGK's IX series of Iridium tipped spark plugs. These use a 0.6mm diameter Iridium tipped center electrode, and further enhances the main benefits of using the Platinum tipped spark plugs.

Iridium is around 8 times stronger than Platinum, and so the use of a 0.6mm diameter center electrode is possible, meaning (again) stronger spark and less strain on the ignition systems. The Iridium tipped spark plugs can be expected to last up to 60,000 miles depending on engine conditions, but do pass their optimum service life before this time.


These are the plugs (ix) i originally had in the car. I later learned they were recommended for 97 models onwards and this is why i swapped them out for the ep8s that i now have in. Didn't make any difference to my miss issues but its one more thing ticked off and a step closer to finding the solution.
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#56045
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
eringobragh wrote:
Mister Two wrote:
I have the Ngk bkr6ep8 which are what Toyota recommend for that engine. Yea its a na

I was on the fence about what to get myself and mixed reviews from both side but in the end I went for the iridium tipped plugs myself...not saying that the plugs are the issue in your case

from mr2oc.co.uk:

NGK Performance - BKR6EIX

The BKR6EIX is part of NGK's IX series of Iridium tipped spark plugs. These use a 0.6mm diameter Iridium tipped center electrode, and further enhances the main benefits of using the Platinum tipped spark plugs.

Iridium is around 8 times stronger than Platinum, and so the use of a 0.6mm diameter center electrode is possible, meaning (again) stronger spark and less strain on the ignition systems. The Iridium tipped spark plugs can be expected to last up to 60,000 miles depending on engine conditions, but do pass their optimum service life before this time.


These are the plugs (ix) i originally had in the car. I later learned they were recommended for 97 models onwards and this is why i swapped them out for the ep8s that i now have in. Didn't make any difference to my miss issues but its one more thing ticked off and a step closer to finding the solution.


hmmm you seem to have exhausted most avenues then...have you checked the coil pack condition?
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Last Edit: 2013/03/25 00:33 By eringobragh.
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#56046
Re: Running rich?? 1 Year ago Karma: 12
What I've done so far.

Changed map sensor, idle sensor, air temp sensor, throttle position sensor-i know that's a hit and miss approach but cost about 20 quid in total second hand.

Cleaned out the iacv. Checked intake for air leaks (none found)

Cleaned throttle body.

Thoroughly cleaned air intake.

Changed leads and plugs. Cap and rotar less than a yr old and in good condition (cleaned the points on cap)

Changed ignition coil-knew this wasn't the cause but it was cracked in several places so out it came.

Next its ignition timing, compression test and coolant temp sensor/sender.
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#56049
Re: Running rich?? 1 Year ago Karma: 87
Mister Two wrote:
What I've done so far.

Changed map sensor, idle sensor, air temp sensor, throttle position sensor-i know that's a hit and miss approach but cost about 20 quid in total second hand.

Cleaned out the iacv. Checked intake for air leaks (none found)

Cleaned throttle body.

Thoroughly cleaned air intake.

Changed leads and plugs. Cap and rotar less than a yr old and in good condition (cleaned the points on cap)

Changed ignition coil-knew this wasn't the cause but it was cracked in several places so out it came.

Next its ignition timing, compression test and coolant temp sensor/sender.


ok thats fairly thorough! hmmm are the leads new?....at this stage its like your timing is probably off a little.

is the misfire just at idle?
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#56050
Re: Running rich?? 1 Year ago Karma: 12
It mainly at idle but also slightly between 3-4000rpm. Having experienced misses before its actually quite mild. The leads aren't new, got them 2nd hand as i didn't think the leads were causing the issue-they are in good condition.

As i said it goes out of the engine after 10 or so mins of driving but find it very annoying!
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#56051
Re: Running rich?? 1 Year ago Karma: 87
its odd...presume the distrib is at 10 degrees, etc considering the long list of stuff you've done....hope you get to the bottom of it.

...similar issue myself when i first got the 2, on cold it would jump from 1000 - 1500 like a yoyo..

the cuplrit, fouled sparkplug:


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