Quote:
Originally posted by Zkast
Are there any running problems right now? @ 10" of vacuum it should be barely running at all. It should be very very rich. The map sensor will be almost 2.4 volts at 10" which is just over cruise vacuum. Are you sure the vacuum gauge is correct??
It's possible to have a vacuum leak at the throttle body gasket (VERY common on this setup).
Also, where is he getting this vacuum reading? from the TBI or from the vacuum tree in cylinder #8 runner.
|
He told me he's used 2 different gauges and gets the same result. He also said the engine requires anywhere from 17 to 15 pounds of vacuum to work with that map sensor. He's checked the gasket and it's not leaking. He said he's getting the reading from the vacuum tree in cylinder #8 runner. Everywhere he's checked he still gets the 10 pounds. When he revs up the motor to 1500 rpm then he gets the proper vacuum and it starts running good.
Any other ideas?
Rustyinmonroe