The other day i accidently retarded my timing and i got my grandpa to stick his timing light to it and fix it.I think it still needs to be advanced a few degrees more but it runs fair right now.But this morning my brakes were hard to push and made a really airy sound.When its in park and i push and hold the brake in the engine starts to stumble and i was like wtf! Someone please help me!

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1985 Firechicken
2.8 v6
Mods:
TB Coolant Bypass
My own kik @$$ dual intake
Freshly Painted(bright metallic blue)
Mods to come:
Either an 80 series flows or super turbo dynomax.Cant decide!
An engine is like a person,to scream it has to exhale hard -Flowmaster

 

sounds to me like your having a problem with the brake power booster. going by your description, i'd say it is the bad part.

 

I'm with Zippy, bad booster.

Disconnect it and see if the problem goes away {make sure to plug the hose to the engine )

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"