94 Explorer won't start
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Yeah, I agree, my thoughts too.
Do you think I should get the engine out and tear it down in the shop or just pull off the top for now? If the block is gone I'm dropping a new engine in anyway. If the piston has issues I'll need to pull the motor anyway to get at the botom end.
My '91 has a 4.0L which I assume will match up and go in the '94 chasis.
This may be easier than messing too much with the '94 motor.
Other possibilities, thoughts, ideas??
What about you mrshorty? You still out there?
Do you think I should get the engine out and tear it down in the shop or just pull off the top for now? If the block is gone I'm dropping a new engine in anyway. If the piston has issues I'll need to pull the motor anyway to get at the botom end.
My '91 has a 4.0L which I assume will match up and go in the '94 chasis.
This may be easier than messing too much with the '94 motor.
Other possibilities, thoughts, ideas??
What about you mrshorty? You still out there?
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Joined: Dec 2001
Posts: 3,742
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From: UT
I'm still here, just haven't had anything to add.
5 of 6 cylinders seem good (you didn't get any hard pressures measured, but you seem to have some compression on 5). I'm surprised it still won't start on 5 cylinders. My '92 had two cylinders go bad (rings), and it only had a slight miss. It still seemed to run ok.
If it comes to pulling the motor, it might be easiest to drop the '91 into the '94 (they use the same block -- a few differences in bolt on emmissions components, but that doesn't affect the block), and then rebuild the '94 block.
5 of 6 cylinders seem good (you didn't get any hard pressures measured, but you seem to have some compression on 5). I'm surprised it still won't start on 5 cylinders. My '92 had two cylinders go bad (rings), and it only had a slight miss. It still seemed to run ok.
If it comes to pulling the motor, it might be easiest to drop the '91 into the '94 (they use the same block -- a few differences in bolt on emmissions components, but that doesn't affect the block), and then rebuild the '94 block.
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mrshorty,
I need to get the proper coupler for the pressure guage because I too am interested in the actual on #5. If it is down it may be a cracked head or bad gasket which is a better play than block and pistons.
I was wondering about the "no start" too as there seems to be no grinding or other noises when it turns over to suggest it may have thrown a rod or a push rod cracked off and is rolling around in there somewhere. It should run!! I'm going to swap out the FPR with my 91 and test if it isn't getting flooded.
I suppose I could use the block and heads on the 91 and build up from there with 94 parts as it seems most of the changes from 91 - 94 are related to the upperintake manifold (area).
For now I think I'll pull apart everything I can from the top down (as Jerry advised) and have a good look.
I'll keep you posted,
Thanks,
Gil
I need to get the proper coupler for the pressure guage because I too am interested in the actual on #5. If it is down it may be a cracked head or bad gasket which is a better play than block and pistons.
I was wondering about the "no start" too as there seems to be no grinding or other noises when it turns over to suggest it may have thrown a rod or a push rod cracked off and is rolling around in there somewhere. It should run!! I'm going to swap out the FPR with my 91 and test if it isn't getting flooded.
I suppose I could use the block and heads on the 91 and build up from there with 94 parts as it seems most of the changes from 91 - 94 are related to the upperintake manifold (area).
For now I think I'll pull apart everything I can from the top down (as Jerry advised) and have a good look.
I'll keep you posted,
Thanks,
Gil
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I pulled the upper intake manifold off this evening.
I noticed that most of the vacuum lines on the tree were dead ended (ie. two inches of rubber pipe with a bolt stuck in the end). This was also true for the vacuum line to the FPR. I should have looked closer before.
It's a wonder this truck ran at all (for the previous owner).
I'll let you know about #6 cylinder when I get down to the heads. It's too cold to do too much at once.
I noticed that most of the vacuum lines on the tree were dead ended (ie. two inches of rubber pipe with a bolt stuck in the end). This was also true for the vacuum line to the FPR. I should have looked closer before.
It's a wonder this truck ran at all (for the previous owner).
I'll let you know about #6 cylinder when I get down to the heads. It's too cold to do too much at once.
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