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Join Date: Dec 2006
Location: Aurora, IL
Posts: 220
3.2 rebuild. I have good spark and I have good fuel injection, but no start

I have gone through the Bentley and all the individual devices on the 3.2 are in spec. I have good spark and timing with all cylinders. I have fuel injectors injecting gas. So gas and electrics are reasonably there (maybe not synchronized like they should be).

The most I can get is an occasional small backfire out the muffler. I have gone through all the docs I could find on the website and have not found symptoms like this. Anybody know of anything on the top side (like a connector or vacuum leak or plugged orifice) that I might have missed before I go back to the cams and checking all that? What is surprising me (and I am a novice) is that the vane on the intake stays closed. I would think it would open somewhat to let some air in. Helping it does nothing.

Time to go study the books some more.

thanks in advance for any reocmmendations
Marlin

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Marlin Ness
sadly no longer: 1967 912, 1971 911T, 1974 911 Targa, 1975 914, 1972 914 Eagle GT with V8
currently: 1972 914 Eagle GT with 3.2 Carrera, 1970 911T (964 turbo wide body look), 1986 911 Carrera
Old 07-29-2012, 01:16 PM
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Make sure your distributor is timed correctly to your cams. It could be trying to fire on number 4 when it should be number 1, etc. In this case the distributor needs to be rotated 180 degrees.

-Andy
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72 Carrera RS replica, Spec 911 racer
Old 07-29-2012, 03:44 PM
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Or you could have the flywheel sensors connected backward so you have the wrong reading for the right place. Switch the 2 black connectors above #3 intake.
Bruce
Old 07-29-2012, 05:10 PM
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Eagledriver,
I had this on the Technical forum as well with about 19 comments, but you nailed it. I had the distributor 180 out. Engine did start, but really won't hold an idle without giving plenty of throttle. Time for more research.
thanks
Marlin

__________________
Marlin Ness
sadly no longer: 1967 912, 1971 911T, 1974 911 Targa, 1975 914, 1972 914 Eagle GT with V8
currently: 1972 914 Eagle GT with 3.2 Carrera, 1970 911T (964 turbo wide body look), 1986 911 Carrera
Old 08-05-2012, 08:22 AM
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