My truck won't start sometimes the engine cranks hard at times but other times it cranks easy when it cranks hard it sounds like the the starter is picking up the tourqconverter. I have water in the valve covers but not in the oil. It runs on 6 cylenders 1 and 3 fire ever now and then. If you talk to a mech they want put in a new engine. I don't need a new engine my dad was a mech but has passed away can you tell me if i just need to put head gaskets on or do a head job thank you George
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check to see if its getting fuel. find the fuel rail service valve(it looks like a bicycle tire valve on the fuel line and has a cap on it) hold it open while you crank it to see if fuel is present. if no fuel then its time for a fuel pump. if theres fuel pressure there during cranking then I would suggest taking it in to a shop to have the codes pulled on it rather than trying to diagnose anything else further...jm
well if ur not getting spark and u changed all of the ignition components lets think about the computer in order for the ignition to work you have crankshaft position sensor that fires the fuel injectors and the spark change that and if still nothing then change the camshaft postion sensor that sensor tells the computer that the 1 piston has came all the way up and it tells the crankshaft sensor to do its thing
Hi, if an engine cranks but refuses to start, it lacks ignition, fuel or compression.
When the engine cranks normally but won't start, you need to check ignition, fuel and compression.
Ignition is easy enough to check with a spark tester or by positioning a plug wire near a good ground. No spark? The most likely causes would be a failed ignition module, distributor pickup or crankshaft position (CKP) sensor.
These trucks have a problem with the catalytic convertor blocking the exhaust causing a no start condition, the three things you need to start fuel, spark and air. Try disconnecting exhaust in front of cat.