Need help with bad whine at start up

[BurgerLord]

I have pulled the belt, however nothing has changed, it looks like I just have to pull the plenum tomorrow and triple check everything again.

[Dynomite]

Originally Posted by BurgerLord

I have pulled the belt, however nothing has changed, it looks like I just have to pull the plenum tomorrow and triple check everything again.

but......the whine sound seems like metal contact and not air whistle.
but since you pulled the belt....……..it has to be air whistle which must be a Injector Housing Gasket leak or similar.

Unless there is a wrench stuck under the Harmonic Balancer

[XfireZ51]

Originally Posted by BurgerLord

I have pulled the belt, however nothing has changed, it looks like I just have to pull the plenum tomorrow and triple check everything again.

Measure twice, cut once.

[1991ZR1]

My guess is going to be starter drive not pulling back off the flywheel gear.

[Dynomite]

Originally Posted by 1991ZR1

My guess is going to be starter drive not pulling back off the flywheel gear.

That would do it

And since he prolly has vacuum leak or MAP unplugged a Plenum Pull should include a check of the starter

Except the "promptly dies".

Reconditioning of Top End includes New Injectors, New Vacuum system (lines and connectors) and Reconditioned/new starter....oh.....and Phil's Improved Fuel Pressure Regulator and for some.....TB Coolant blocked at injector housing.

[BurgerLord]

Thank you all for the advice, I redid the plenum install and its still screaming at me. I guess that I need to look at the starter, a bit of coolant did leak out when I removed the plenum, would that cause the starter problem?

[Dynomite]

When you check the starter as 1991ZR1 suggests.....also make sure the valley drain is clear.

[Ccmano]

Originally Posted by BurgerLord

Thank you all for the advice, I redid the plenum install and its still screaming at me. I guess that I need to look at the starter, a bit of coolant did leak out when I removed the plenum, would that cause the starter problem?

Good work, now we’re getting somewhere. More than likely the engine valley drain is clogged. Very common. When coolant went down there it flooded the starter and is causing the starter drive gear to stick in the ring gear. The noise is probably the starter being driven by the ring gear. You’ll have to pull the starter, clear the drain, disassemble the solenoid/plunger portion of the starter and clean everything up. Probably a good idea to at least rebuild that part of the starter while your in there. Given its location if your not comfortable rebuilding the starter you might want to just exchange it for a rebuilt one. No sense in putting it all back together only to find out the starter is ruined. That should solve the starting noise problem. The not running part is likely something else. As was mentioned make sure both MAP sensors are plugged in and have their vacuum lines attached.
H

[Young1]

Coincidentally could his primary fuel pump have just gone bad? Isn't starting, running a short while then dying a symptom of that?


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[Hib Halverson]

The OP stated the engine starts and goes up to 3000 then promptly dies.

With a dead primary fuel pump...since the engine starts on both pumps and runs that way a while until the ECT comes up to a certain value, it won't die until the ECM cuts off the secondary pump and that does not happen immediately after start.