Hard to explain HELP PLEASE!
Professional
Joined: May 2011
Posts: 104
Likes: 1
The cam position sensor is responsible for firing the injectors in time,so a bad sensor can cause a no-fire also. i agree about the crank sensor and going with a mopar replacement. I've seen after market ones change base timing and cause pinging or loss of power because the point of the pick-up being off in placement. The pick-up is only about 2-3 mm wide,so that leaves alot of room for misplacement in the overall diameter of the sensor.
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Professional
Joined: Jan 2011
Posts: 125
Likes: 0
ok new info. crank pos sensor replaced nothing happened. there is exhaust or something that comes out of the throttle body when it attemps to start(still havent gotten it to start tho) is this a stuck valve possible? timing off?
Legend
Joined: Jul 2007
Posts: 7,843
Likes: 13
From: DFW, Texas
The proper way to do a compression check is on a warmed up engine, with the entire bank of spark plugs removed. You crank the engine over with the gauge in the spark plug hole until the psi tops out on that cylinder, and move to the next.
Make sure the battery is charged up fully, as that much cranking is going to put a strain on it.
Make sure the battery is charged up fully, as that much cranking is going to put a strain on it.
Rookie
Joined: Jul 2010
Posts: 96
Likes: 0
From: florida
to me it sounds like a head gasket. i don't exactly know how dodges work but a buddies nissan blew the head gaskets and it would almost start then just turn over. had fire gas was great. so sounds like time for a head gasket. sorry about the bad news.
Administrator
Joined: Apr 2010
Posts: 87,394
Likes: 4,213
From: Clayton MI
I have found that there is actually very little difference in the results of the test from a warm engine, vs. a cold one, considering that by the time you get to the last couple cylinders, the engine is cold anyway.... might just as well go for consistency. Otherwise, could skew your results. (but not be much....)