89 NA Ran great before I 'fixed it..no idle
#1
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89 NA Ran great before I 'fixed it..no idle
Hey guys, I pulled off the manifolds & cleaned 5th/6th ports. While in there I replaced all vac lines. Starts fine, wont idle. Fairly smooth as long as I keep gas on it (not as smooth as before I decided to fix it). Far as I can tell all plugs and vac nipples accounted for. If I had swapped vac lines somewhere, would that cause this?
I'm thinking vacuum leak, thought I'd run it past you all. Any place in particular I should look?
I'm thinking vacuum leak, thought I'd run it past you all. Any place in particular I should look?
#4
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Yes, new upper and lower intake gaskets. If it was a small leak I'd assume it would idle roughly, this one fires up at 3k like normal, when it drops it drops to zero.
#6
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Thanks for the suggestions!
Last edited by mwpayne; 08-19-16 at 08:08 PM.
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#10
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I figured I'd have to pull em and do it all again. Question; I used 'the right stuff' on both sides of the new lower gasket, didn't use anything on the new upper. Do you guys always use a sealer?
#12
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Great idea on the grease..I'll do that upon reassembly. I just now took off the upper manifold, found a plug I cannot identify. Doesn't look like its ever been plugged in..but I could have overlooked it. It was laying just under the tstat housing next to the (I assume) temp sensor attached to the back of the housing.
Can you tell me what this might be?
Can you tell me what this might be?
#14
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#15
Cake or Death?
iTrader: (2)
Mazda seems to have used the fully optioned harness on most (but not all) of the cars, so you'll probably find unused plugs (often wrapped onto the harness) for things your car did not get.
If you haven't already, go to foxed.ca and download the factory service manual.
The included wiring diagrams allow you to find out what a plug is by checking wire color.
If you haven't already, go to foxed.ca and download the factory service manual.
The included wiring diagrams allow you to find out what a plug is by checking wire color.
#16
Admitted 'rexaholic'
Thread Starter
Mazda seems to have used the fully optioned harness on most (but not all) of the cars, so you'll probably find unused plugs (often wrapped onto the harness) for things your car did not get.
If you haven't already, go to foxed.ca and download the factory service manual.
The included wiring diagrams allow you to find out what a plug is by checking wire color.
If you haven't already, go to foxed.ca and download the factory service manual.
The included wiring diagrams allow you to find out what a plug is by checking wire color.
I did download it, printed several pages to help with vac lines, etc.
Thanks again!
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