3.5 swap, turns rough by hand.
#1
3.5 swap, turns rough by hand.
Im doing a 3.5 swap on my 4th gen. I switched all the timing stuff over, now when i turn the motor over by hand it goes smooth then just stops. Like its hitting a valve or something. I know the timing is set right, checked it and reset it a few times. I can get it to turn over completely its just rough in that one spot. I pulled the plugs and looked in the cylinders, there clean.
Idk any ideas?
Idk any ideas?
#2
Im doing a 3.5 swap on my 4th gen. I switched all the timing stuff over, now when i turn the motor over by hand it goes smooth then just stops. Like its hitting a valve or something. I know the timing is set right, checked it and reset it a few times. I can get it to turn over completely its just rough in that one spot. I pulled the plugs and looked in the cylinders, there clean.
Idk any ideas?
Idk any ideas?
The last time I experienced something like this was a motor we were putting together, turned out to be so much carbon buildup that it did not the let piston reach TDC. If your 200% sure nothing else is hitting, that might be your issue.
#4
No, dont do that! if it does not turn, your going to break it when you try to start it, guaranteed. You have to figure out whats stopping it from turning. If nothing else is hitting and your sure the timing is perfect (and you didnt mix the rear and front cams) then its probably carbon buildup, so remove the heads, and check.
#6
#8
did you happen to remove the oil pan? its really hard to tell what the problem is on the bottom end without tearing it down, checking bearing's rod and main's. there can be a loose connecting rod cap causiing it not to spin, again its hard to chime in you would really have to tear down the motor for a accurate diagnosis. something is obviously hitting preventing from revolving the motor.
#13
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The last motor swap before that was on an '02 pathfinder, it had a rough spot just like your describing.......... I put it in without doing some further tests & that was a very bad idea. Had to pull it out due to a #2 misfire, 90psi max on that cylinder even after putting 150+ miles on it to make sure it wasn't something stupid like carbon or a stuck ring.
I never got to pull it apart because of the whole junkyard warranty thing, but I'm pretty sure the cylinder wall rusted to **** after the small engine fire from the donor truck was put out.
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