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-   -   3.2 rebuild. I have good spark and I have good fuel injection, but no start (http://forums.pelicanparts.com/911-engine-rebuilding-forum/691598-3-2-rebuild-i-have-good-spark-i-have-good-fuel-injection-but-no-start.html)

marlinaness 07-29-2012 01:16 PM

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

Eagledriver 07-29-2012 03:44 PM

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

Flat6pac 07-29-2012 05:10 PM

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

marlinaness 08-05-2012 08:22 AM

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


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