Helping neighbor out

Asked by Jul 03, 2016 at 12:40 AM about the 1999 Chevrolet Silverado 1500

Question type: General

I changed out her fuel regulator now her 97
Silverado truck with a 5.7 will not start.
Sounds like the motor locked up .....please
help me i fill so bad was running after me
not running

7 Answers

63,265

Sounds like it vapor locked,meaning getting to much fuel,may i ask why did you change the regulator?Problem before the change?

1 out of 1 people think this is helpful.
65,605

What should be done is a fuel pressure gauge hooked up onto the Schrader Valve, and checked for proper fuel pressure, which should be 56 to 63 lbs. Then just let it sit while watching the fuel pressure gage to see if the pressure holds. (with the key off) It should not drop more than 5 lbs. in 3 minutes. You say it sounds like the motor is locked up which is an indication to me it is flooded due to a leaking spider injection assembly. As you must be aware of now that since you replaced the fuel regulator, that you can replace individual parts of the injection system. This is not recommended since you would be back in fixing something else within 6 months, in your case sooner. The spider injection assembly has ben redesigned and should be replaced as a hole unit.

It will not turn at all like the starter not working but i got that tested it passed but i had them give me new one still motor locked

64,995

Remove all the spark plugs and try to crank it. Sounds like one or more cylinders is full of gas or coolant. HTH. -Jim

65,605

Also check the flywheel to make sure it is in tacked. They do crack and the ring gear would be out of line for the starter.

1 out of 1 people think this is helpful.

Where was some teeth off the flywheel

65,605

So then the trany would have to be dropped or the motor pulled in-order to change. The starter is working but not turning the engine over. If the motor was running fine before, and the flywheel is not damaged too bad, you may be able to turn the engine over by hand to get to some good teeth on the ring gear for the starter to engage to start the engine, if you need to get it somewhere to fix.

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