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Guest Message by DevFuse

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Intake Manifold Question

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2 replies to this topic

#1 DasWaff


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Posted 27 August 2006 - 11:25 PM

I have an '86 GL-10 turbo w/5sp manual and 4WD. Just gave it a third engine. This EA82 is slighlty newer... The only differences are in the manifolds.

The intake manifold doesn't have the 3 hose thermo regulator valve at the rear, nor the solenoid valve on top.
I got everything connected and it started but ran really rough while cold, and didn't hold idle well when warm either. I heard a hiss and discovered a fitting at the back of the throttle body. It looks like a perferated bolt, there is no hose barb, its possible one could have been broken off at some point, but it seems awfuly smooth for that. I put my finger over the hole in the fitting and everything smoothed right out. I popped in a threaded plug from an old manifold and it runs fine.
What is this fitting? Does it need a different fix?
I don't have the vac diagram for this manifold. I can't use the old manifold because its cracked.

A smaller concern is the connection of the vaccuum line at the air intake. The new engine has a single "L" which connects to the vaccuum line with the flow valve. The old engine had a "T" fitting coming out of the intake with an additional line running to the canister. I left the "T" connection, but I don't think it matters much, right?
I'm not getting any error codes,but I'd like to be a little more sure before I take it out for a road test.
I've pulled a ton of info off this board searching, but this one I have to ask.
Thanks, DasWaff

#2 DasWaff


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Posted 28 August 2006 - 01:13 PM

I still haven't found the correct vaccuum diagram, but some of the older, similar ones suggest to me that this fitting is for an automatic tranny. Does that sound correct?


#3 john in KY

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Posted 28 August 2006 - 04:34 PM

Probably the vacuum fitting for the vacuum modulator, which you don't have.

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