Author Topic: MPFI conversion  (Read 3247 times)

Offline mean87

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MPFI conversion
« on: December 11, 2010, 08:07:35 AM »
I have an 87 Silerado i have been workin on the past 2 years. The engine is a 350 .40 over with 10.5 to 1 compresion. The cam has a 480/498 lift 226/234 duration at .050 that breaths through a set of Pro torker vortec 2.02/1.6 heads. The engine is fed by an Edelbrock Pro Flo 3502 efi and 670 holley throttle body. My chip was design to spec by Westers Garage. My problem is the truck is gettin way to much fuel. I discovered that the vacuume line on the MAF sensor was broke i replaced it and it seemed to help but it did not fix the problemany onehave any other suggestions.

Offline VileZambonie

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Re: MPFI conversion
« Reply #1 on: December 11, 2010, 02:28:03 PM »
I think you mean MAP sensor. Make sure you have a good vacuum signal to the map sensor. Do you have diagnostic interface capabilities?

You may want to ask some more questions over at Edelbrocks forum

http://forums.edelbrock.com/forums/forumdisplay.php?f=34
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Offline mean87

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Re: MPFI conversion
« Reply #2 on: December 14, 2010, 09:53:16 PM »
Yes the MAP sensor. I have not checked the vacuum pressure yet what range should i be in. As for diagnostic capabilities i do not have a diagnostic tool i intend on gettin one. first chance i get ill test it and keep you posted. Thanks for the input

Offline Blue 82

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Re: MPFI conversion
« Reply #3 on: December 15, 2010, 05:29:30 PM »
I know this sounds like a dumb question but how do you know it's getting too much fuel?

Check your messages

« Last Edit: December 15, 2010, 06:14:08 PM by Blue 82 »
82 stepside 2wd 355/th350/3.08 posi

Offline mean87

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Re: MPFI conversion
« Reply #4 on: December 15, 2010, 08:10:45 PM »
The engine will flood out and stall at idle, Spews smoke that turns to black with an increase of throttle, Spark plugs soaked in fuel