Why Engine management light wont go off after overhaul

If the injector pump has failed to pump out any fuel, then it is likely that the pump is faulty and needs to be replaced. It is also possible that the fuel lines are blocked or the fuel filter is clogged. If the fuel lines and filter are clear, then the pump may need to be replaced.

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Assuming the pump and injector overhauls were of good quality, it is possible some dirt has entered the fuel system during fitting though it really could be almost anything and systematic checking is needed to discover the cause of the problem.

This is a timing issue or a valve seat issue. Most likely timing because you overhauled it. Check the mechanical and ignition timing.

fuel filter, computer

• it sounds like you might have bad gaskets or seals even if you have replaced them if they are bot installed just right you can have leaks such as you have described

engine cranks but won't run may be caused by either fuel delivery or ignition issue. are you sure when you had the motor rebuilt that the shop put the cam and crank on correct engine timing?

Sounds like a immobilisor fault ,was battery left connected with the key in the ignition and the drivers door open??

Engines are not overhauled due to age or mileage. Engines are overhauled due to mechanical failure and/or excessive wear. I have overhauled engines with less than 6 months of use on them. On the other hand, I personally drive a 1982 Ford Escort with 220,000+ miles on it that has never been overhauled. It depends on how well the engine has been maintained and the type of driving it has been subjected to. I have also seen engine failures on cars that have had all the correct maintenance and driven reasonably, but they fail anyway. (Rare, but it does happen.)

fill up a squirt can with transmission fluid and spray it in the intake when the engine is running do this slowly. the cars exhaust will smoke horribly bad and stink as equally bad. but the transmission fluid will actually knock the carbon off your valves.
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