2005 496 mag crank no start
#1
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Joined: Jul 2018
Posts: 29
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No start hot or cold until I spay fuel into it, catches then runs perfect. Got 42# at the rail while cranking.
Just bought this Baja and have no history on it any help would be appreciated. My scanner won't be here for a few days
Just bought this Baja and have no history on it any help would be appreciated. My scanner won't be here for a few days
#2
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Joined: Jul 2008
Posts: 3,748
Likes: 868
From: Delray Beach, FL
Not a lot of info but heres what came from 10 years of 496's gremlins...
Maybe:
-Get injectors cleaned
-Check battery voltage(If its less than 12.6v 496's do some crazy stuff)
-496's have had issues with the cool fuel where paint ends up in the fuel rails. Maybe they dont build enough flow till it starts?
-IAC Valve?
-Could it be the fuel? Was it sitting?
-Fuel water separator?
Maybe:
-Get injectors cleaned
-Check battery voltage(If its less than 12.6v 496's do some crazy stuff)
-496's have had issues with the cool fuel where paint ends up in the fuel rails. Maybe they dont build enough flow till it starts?
-IAC Valve?
-Could it be the fuel? Was it sitting?
-Fuel water separator?
#4
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Joined: Nov 2006
Posts: 1,313
Likes: 153
From: Tygart Lake, WV
43psi is correct. Techmate will allow you to test crank position sensor, injectors, coil packs. U will need spark gap test tool to check coil spark.
If old fuel, pump out and get rid of it. Use a remote 5 gal can w/ fresh fuel to test run engine.
If old fuel, pump out and get rid of it. Use a remote 5 gal can w/ fresh fuel to test run engine.
#7
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Joined: Nov 2009
Posts: 4,198
Likes: 500
From: KY
0W covers 4 different revisions
My thought is the ECM is not seeing something to turn the injectors ON. With some fuel provided it sees something that causes it to turn ON.
Could also be in part weak spark
Do you see the Tach showing anything when cranking?
My thought is the ECM is not seeing something to turn the injectors ON. With some fuel provided it sees something that causes it to turn ON.
Could also be in part weak spark
Do you see the Tach showing anything when cranking?



