2002 Magnum 325 - no start-low compression
#1
2002 Magnum 325 - no start-low compression
Figured I'd find something searching the forums, but didn't get to an answer that way.
I recently acquired a two-fer pair of 2002 325 Magnum 4x4's from the original owner. obviously very little use, (so little that the rear brake foot pedals still works).
One runs perfectly.
The other turns over just fine but won't fire even on starting fluid. It has strong spark but compression is only 30psi. Seems to be pushing air back thru the carb.
Before I go randomly tearing into the thing, I'm thinking there must be a "thing" these 325's do to themselves. I saw some allusion in another post about crank nut coming loose, but didn't see that all played out.
Plan is to fix this one then head the other off at the pass.
If someone could point me in the right direction, that'd be great!
I recently acquired a two-fer pair of 2002 325 Magnum 4x4's from the original owner. obviously very little use, (so little that the rear brake foot pedals still works).
One runs perfectly.
The other turns over just fine but won't fire even on starting fluid. It has strong spark but compression is only 30psi. Seems to be pushing air back thru the carb.
Before I go randomly tearing into the thing, I'm thinking there must be a "thing" these 325's do to themselves. I saw some allusion in another post about crank nut coming loose, but didn't see that all played out.
Plan is to fix this one then head the other off at the pass.
If someone could point me in the right direction, that'd be great!
#2
Standard compression is between 70-90 psi. With compression this low don't think the decompression arm on the cam could be causing this. You can pull the cam cover and check,but probably going to have to tear it down. Best to have a manual on this before you start.Here's a cheap one for 5 bucks. 2002 Polaris Magnum 325 Service Manual PDF Download
#3
Standard compression is between 70-90 psi. With compression this low don't think the decompression arm on the cam could be causing this. You can pull the cam cover and check,but probably going to have to tear it down. Best to have a manual on this before you start.Here's a cheap one for 5 bucks. 2002 Polaris Magnum 325 Service Manual PDF Download
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