Will a misfire on cyl 8 cause an engine not to run?
Asked by ShipyardMech27 Jun 26, 2015 at 09:16 PM about the 1996 Chevrolet Suburban C1500 RWD
Question type: Maintenance & Repair
I have a 96 chevy subrban 5.7l. Recently changed the entire ignition system, from
distributor to plugs including the ingition control module. Truck ran like a top. Then I
jumped time. Re timed motor and replaced the chain and gears. Im left with a misfire
on cyl. 8 only. compression tested at cranking, only in the low 70s, while other
cylinders on the same bank are reading 140's. Im thinking its a bent valve, but would
one cylinder keep the motor from running?
12 Answers
Bender0013 answered 8 years ago
No it should still run kinda.not great but should run.
ShipyardMech27 answered 8 years ago
I knew I wasn't crazy. But thats the issue I'm having. Cranks no start. Cyl 8 misfire code. Low compression on only that cylinder. It's driving me nuts.
Bender0013 answered 8 years ago
Will it start with a shot of starting fluid or put gas in throttle body?
ShipyardMech27 answered 8 years ago
After a few shots of starting fluid yes, more often than not. Then its just running rough, backfiring, normal symptoms of a misfire.
Bender0013 answered 8 years ago
These dam computers. Don't make it easy. If was old motor you could unhook the lifters and run.
ShipyardMech27 answered 8 years ago
Right!?! Part of my frustration. I'm used to working on old diesels, And certified on Cummins epa 2010 and earlier. I'm proficient enough but this a new monster to me.
Bender0013 answered 8 years ago
Might be in best interest to put in another motor or replace head.unfortunately ecm need everything working right.
Bender0013 answered 8 years ago
Head job should take about 4hrs or so depending on how bolts come out of exhaust. Motor replacement 8hrs or so.
ShipyardMech27 answered 8 years ago
Yep. Gonna start on the head in the morning. Thanks for the talk friend.
