Question about 1998 Saturn SL
Ford escort 1996 1.8i - only running on 3 cylinders and i have chnged the leads the coil pack is new. using a lot of gas
Determine what cylinder is misfiring and do a compression test on that cylinder. Compare it with a cylinder that is not misfiring. You should have no more than 20% difference between the good cylinder and the bad cylinder. If it is low on compression, suspect a burn valve or bad valve seat... and it will require cylinder head repair. If it is good on compression, then look for a faulty injector or some other reason for the misfire on the dead cylinder.
Posted on Jun 14, 2014
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Posted on Jan 02, 2017
SOURCE: code 300
These have a lot of problems with the ignition coils. In darkness look at the coils for any signs of stray spark. If stray spark is present the coils need to be replaced. Note- Use extreme caution around moving engine parts! Do not attempt this if you cannot do so safely.
Give me an update and we'll continue as necessary.
Posted on Nov 17, 2008
You may be faced with missing cylinders due to exhaust valves sticking or not seating/sealing well generally caused by excessive oil consumption through valve seals and poor fuel quality.Listen to the exhaust while idling in gear and you may hear popping and feel the suction inwards on your hand which helps indicate this problem exists.Perform compression test on all cylinders and should see no more than 20% variance in the compression readings. One last ditch effort before removing the head and servicing valves may be to replace valve seals and run chevron techron in fuel system and run engine at freeway speeds for an extended amount of miles.This is the only additive that has proven usefull with this problem but works best as a preventitive measure before cylinders start dropping.
Posted on Jul 17, 2009
SOURCE: my saturn sc2 2001 run
the fuel injectors can be the cause.first you must isolate which cylinder is shutting down. When the engine is missing pull plug wires one at a time to determine which one does not slow or make engine run worse. CAUTION: use rubber handle pliers or rubber glove to pull wires off plugs.
Posted on Nov 28, 2010
SOURCE: just replaced head gasket, PCV
Hi and welcome to FixYa!
One thing can cause this.... A faulty PCM (powertrain control module). The PCM has connectivity on all current that runs inside the car which includes the engine, transmission, accessories, etc. It's like a car's brain that when it's faulty something will surely fail. One good reason why you have misfires.
Please try to swap the car's computer to resolve the problem.
Hope this helps and thank you for using FixYa! Have a good one!
Posted on Dec 20, 2010
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