Fouled plug on #6 cylinder... Need some suggestions
#1
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Fouled plug on #6 cylinder... Need some suggestions
Guys, That car in the signature has been fouling the number 6 plug ever since i can remember. Last week i put a new cap and rotor and plug/wires. It seemed to run ok afterwards, today i wanted to change all of the plugs again to see if that fixed the problem. It didn't, the 6th plug is VERY wet and the other plugs look "ok". I did a leakdown test on the 6th cylinder, it checked out GREAT, no valve leakage anywhere.. Compression is good. The only thing i can think of is a dirty/bad injector?
Am I off base to think this? My only concern is, I HATE pulling the superram off if its not necassary.
Thanks guys,
Brendan
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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here
Am I off base to think this? My only concern is, I HATE pulling the superram off if its not necassary.
Thanks guys,
Brendan
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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here
#3
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Car: Death Mobile
Engine: 666 c.i.
Brendan, I think you have covered your bases (new ignition parts and good compression)...means it can only be fuel related. I think your suspicion is probably correct and possibly the injector is not closing properly.
The worst thing, is that #6 is not on the same side of the engine as the O2 sensor; so you can't even use that as some sort of a check. I sometimes wish these cars had O2 sensors on BOTH sides.
The worst thing, is that #6 is not on the same side of the engine as the O2 sensor; so you can't even use that as some sort of a check. I sometimes wish these cars had O2 sensors on BOTH sides.
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Glenn,Vadar, anybody else reading,
I did another compression test and got numbers from 100-120 from all 8. If that is not causing the problems, the injectors must be doing it. I'm going to do the leakdown on the injectors, the ONLY problem is... I can only get to 4 of the injectors due to the superam covering the other 4.
I also noticed that only two of the brand new plugs had a biege spot on them, one was completely fouled or wet(number 6), all of the others were completely white still, this is after running new plugs for a week or so.
Brendan
I did another compression test and got numbers from 100-120 from all 8. If that is not causing the problems, the injectors must be doing it. I'm going to do the leakdown on the injectors, the ONLY problem is... I can only get to 4 of the injectors due to the superam covering the other 4.
I also noticed that only two of the brand new plugs had a biege spot on them, one was completely fouled or wet(number 6), all of the others were completely white still, this is after running new plugs for a week or so.
Brendan
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Car: 1985 Trans Am
Engine: 305 TPI
Transmission: 700R4
You might want to check your plug wires, if you haven't already. If the wire is bad, or is resting against a manifold and is shorting out, the plug is going to get VERY wet since it won't fire. Just my $0.02.
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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, Rapidfire #2 @ .055", MSD 6AL, 1.6:1 Roller tipped rockers, Homemade AFPR, K&N cone, no airbox, Aluminum Driveshaft, Wonderbar, TB Coolant Bypass, Ported Plenum, Descreened MAF, Syclone Fuel Pump, JET Airfoil, Mobil 1 synth in all but transmission.
http://www.geocities.com/transam85tpi/
------------------
Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, Rapidfire #2 @ .055", MSD 6AL, 1.6:1 Roller tipped rockers, Homemade AFPR, K&N cone, no airbox, Aluminum Driveshaft, Wonderbar, TB Coolant Bypass, Ported Plenum, Descreened MAF, Syclone Fuel Pump, JET Airfoil, Mobil 1 synth in all but transmission.
http://www.geocities.com/transam85tpi/
#7
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Glenn,
Your idea has come up and was suggested by many.. Only problem is that the superram takes about an entire day/weekend to get off and back on. IF I have to pull it off(either way it sounds like I need to), I really don't want to put it back together and have that not fix the problem. If I had a miniram that would be a different story.
I think I'm going to pick up a new set of 24lb SVO injectors for 200bucks and then go from there. But I still need to do some more tests.
Brendan
Your idea has come up and was suggested by many.. Only problem is that the superram takes about an entire day/weekend to get off and back on. IF I have to pull it off(either way it sounds like I need to), I really don't want to put it back together and have that not fix the problem. If I had a miniram that would be a different story.
I think I'm going to pick up a new set of 24lb SVO injectors for 200bucks and then go from there. But I still need to do some more tests.
Brendan
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