Enough vacuum?
#1
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Enough vacuum?
Switched to an Accel super ram and feels it's a little bit hesitant to idle. It starts but....i dont know....doesnt feel as on-it's-toes like it did with the old GM tpi-setup. It pulls 17 hg vacuum, just in the green on my tester. Since there's a lot of snow im just in the garage testing stuff out. I have no idea how it feels on the road.
Everything is torqued, rtv'd, re-torqued and triple checked but I'd like to see that vacuum to 18-20.. im testing without hvac vacuum line and egr delete. All unused nipples are plugged.
What's left to do? Smoke test?
Everything is torqued, rtv'd, re-torqued and triple checked but I'd like to see that vacuum to 18-20.. im testing without hvac vacuum line and egr delete. All unused nipples are plugged.
What's left to do? Smoke test?
Last edited by Andreas_91GTA; 03-11-2023 at 06:27 PM.
#2
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#3
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Re: Enough vacuum?
Smoke test it for leaks if you think it's an issue. Was this a stock cam engine? It may just need a tune.
Simple smoke machines can be bought relatively inexpensive. Made up for even cheaper or borrowed too. Asking a local shop to do it is sometimes an option.
Simple smoke machines can be bought relatively inexpensive. Made up for even cheaper or borrowed too. Asking a local shop to do it is sometimes an option.
#4
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Re: Enough vacuum?
Kind of prefer a major issue than this (guessing) sneaky leak somewhere
Needle on the vacuum gauge is steady at 17. But, maybe it was at 17 before I tore it down.
#5
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
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Re: Enough vacuum?
Hose pinch off pliers: Pinch off your new vacuum hoses one at a time and watch for any differences in the gauge reading.
#6
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Re: Enough vacuum?
I dont know what im suspecting. Today after 5 min running the idle started to wander all over the place. Could it be something temperature related?
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#8
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Re: Enough vacuum?
I should mention my problem isn't super high idle. Problem is it does not wanna start as strong as before the intake change.and that's what's bugging me.
And I haven't driven it yet. Maybe other stuff will happen when the engine is under load.
#9
Junior Member
Thread Starter
Re: Enough vacuum?
Bought a smoke machine and found a loose bolt holding the throttle wire bracket. Should've checked it and saved money but oh well...."learning investment". Now it's pulling 19-20 hg and starts right up.
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