Engine runs unevenly
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Joined: Jul 2007
Posts: 4
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Engine runs unevenly
Hi.
I have a 1987 FB GTA. L98 350 TPI. 84000 Miles.
I have a problem I do not know how I should proceed with debugging.
The car runs but misses a bit on a cylinder. Not much but it is notable.
So before this summer, I wanted to have a great time on the engine.
The car is actually 26 years old. Therefore I purchased OEM New Distributor, ignition cables, ignition coil and all Sparkplugs. The Basic setting 6 degrees for ignition. The problem is still there. The compression is 140,145,145,145,145,145,145,145 Psi (dry).
The resistance of the injectors is 16.4: 16.5: 16.3: 16.5: 16.4: 16.4: 16,
4: 16.4 Ohm.
What is the next step.
H. E. Sweden
I have a 1987 FB GTA. L98 350 TPI. 84000 Miles.
I have a problem I do not know how I should proceed with debugging.
The car runs but misses a bit on a cylinder. Not much but it is notable.
So before this summer, I wanted to have a great time on the engine.
The car is actually 26 years old. Therefore I purchased OEM New Distributor, ignition cables, ignition coil and all Sparkplugs. The Basic setting 6 degrees for ignition. The problem is still there. The compression is 140,145,145,145,145,145,145,145 Psi (dry).
The resistance of the injectors is 16.4: 16.5: 16.3: 16.5: 16.4: 16.4: 16,
4: 16.4 Ohm.
What is the next step.
H. E. Sweden
Last edited by enigmagta; May 30, 2013 at 03:16 AM. Reason: 16,4 ohm insted of 6,4
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: Engine runs unevenly
Under 12 ohms is no good. Need to replace any that are under 12 ohms. Best bet is to replace all with a flow matched set. Southbay will ship you a set of the better Bosch IIIs for a very good price.
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