Question about 1986 GMC S-15
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Posted on Jan 02, 2017
SOURCE: GMC 2500 Sierra keeps stalling
If you get check engine light or a service
engine soon light then is something related to the computer.
Can cause stalling, Bad fuel, clogged fuel filter, bad spark plugs, bad spark plug wires, bad O2 sensor (would cause a check engine light) bad ignition coil, bad cam shaft sensor, bad crank shaft sensor.
Posted on Aug 01, 2008
Let's think about this as a normal problem first:
It takes three things to have combustion:
1) Oxygen (in the form of air in this case)
2) Fuel (in the form of gas in this case)
3) An ignition point (in the form of a spark plug in this case)
The trick is getting these three variables in the right ratios, at the rigth times. Any of them is off (too much fuel, not enough air, spark too early or too late) and you have a failed combustion.
A car's internal combustion engine is no different. Reading your request, I think we can pressume that the engine actually starts and runs idle.
If this is the case, then check the following:
1) Change the air filter.
2) Has the fuel been sitting in the car? If so, you may want to drop in some injector cleaner into your tank.
3) If the above two fail, take the car to a mechanic and have them check the injector pressure. The problem may be related to the fuel pump not putting up enough pressure to rev the car, while only putting up enough pressure to idle the car.
Hope that helps!
Posted on May 20, 2009
my friend the car backfires if its runing lean ( insufficient fuel ) or runing rich ( insufficient oxygen ) this mostly in carbourated cars would make incomplete compustion . in engine with fuel injuction there may be a leak in the intake valve that makes the fuel to burn in the exhaust pipe . so check for leak asap
Posted on May 29, 2009
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