No compression on rebuilt motor? Will not start.
Jan 26, 2011, 11:15 PM
#16
Evolving Member
iTrader: (1)
Join Date: Jan 2011
Location: aka 1slowassevo
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
Not sure if you were the one that called the shop the other day.
Anyway the person I talked with said that they broke a crank pulled the motor and never took the head off and tossed a new crank in. After the conversation had me thinking maybe they put a 2.0 crank in would would kill the compression if it was ment to be a 2.3.
If I feel like I have flooded a motor out I will undo the injectors and pour about a table spoon worth of oil in each hole and Crank on it for a little while with the plugs out. Also new plugs are key. Once plugs are real wet even when dry and clean they will not be right. Its amazing the amount of time I have seen people spend trying to make car start and it was only a fresh set of plugs away.
Anyway the person I talked with said that they broke a crank pulled the motor and never took the head off and tossed a new crank in. After the conversation had me thinking maybe they put a 2.0 crank in would would kill the compression if it was ment to be a 2.3.
If I feel like I have flooded a motor out I will undo the injectors and pour about a table spoon worth of oil in each hole and Crank on it for a little while with the plugs out. Also new plugs are key. Once plugs are real wet even when dry and clean they will not be right. Its amazing the amount of time I have seen people spend trying to make car start and it was only a fresh set of plugs away.
Plugs did wonders for me last week lucas..Good post.
Jan 27, 2011, 03:55 PM
#24
Newbie
iTrader: (1)
Join Date: Dec 2006
Location: Panama City, FL
Posts: 90
Likes: 0
Received 0 Likes
on
0 Posts
Sounds like bent valves. Once you have ruled everything external of the engine out, Pull the head and have it checked. Also make sure the pistons are getting to TDC to make sure the crank is the correct one (I'm sure you did this but just wanted to throw that out). Sounds like bent valves to me.
Jan 27, 2011, 04:22 PM
#25
If the leak down test shows anything leaking past the valves, I will pull the head. But as I said in the 1st post, the valves and seals are new and I did lap each valve to it's port, ran some gas through the ports and none leaked.
Feb 14, 2011, 02:36 AM
#27
Newbie
iTrader: (6)
Join Date: Nov 2010
Location: Greensburg, PA
Posts: 70
Likes: 0
Received 0 Likes
on
0 Posts
Results of the Leak Down Test??? Because I agree with "TheMadScientist" it most definitely sounds like bent valves. But can't speculate until you complete that leak down test. None the less GL with this motor builds that have frustrating issues like this take a toll on you stress wise been there done that.
Feb 14, 2011, 06:44 AM
#28
Not sure why you're worried about fuel or spark when the culprit is clearly an issue with compression.
If you're not getting ANY compression you're timed incorrectly or you're having valvetrain issues. That's assuming the motor was built correctly.
Fresh motors won't give you 160-170psi off the bat but they'll sure as hell beat 0 psi without gobs of oil in the cylinders.
If you're not getting ANY compression you're timed incorrectly or you're having valvetrain issues. That's assuming the motor was built correctly.
Fresh motors won't give you 160-170psi off the bat but they'll sure as hell beat 0 psi without gobs of oil in the cylinders.
Feb 20, 2011, 09:19 PM
#29
I got a leak down tester but before I went any further with that, I decided to degree the cams as I've read about issues with Revolver cams. The head and block were decked so I expected the numbers to be off anyway. Here's the readings I got.
Intake:
http://i252.photobucket.com/albums/h...n/IMG_0485.jpg
Exhaust:
http://i252.photobucket.com/albums/h...n/IMG_0488.jpg
Would the intake cam being that much off keep the car from starting?
Intake:
http://i252.photobucket.com/albums/h...n/IMG_0485.jpg
Exhaust:
http://i252.photobucket.com/albums/h...n/IMG_0488.jpg
Would the intake cam being that much off keep the car from starting?