P700m4 P700 compression

[Thomas88]

Hello.
I bought a pioneer 700-4 a little over a year ago and have about 850 miles on it. I’ve noticed over the last few months that the engine oil smells pretty “gassy”. I changed the oil, but it continues to smells like that. I was wondering if anyone knows what the compression is supposed to be at for this engine so I can perform a compression test on it. At least that way I can rule out bad piston rings (or perhaps that’s the problem).
Thanks for the help.


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[Admin]

 

[DG Rider]

Hello.
I bought a pioneer 700-4 a little over a year ago and have about 850 miles on it. I’ve noticed over the last few months that the engine oil smells pretty “gassy”. I changed the oil, but it continues to smells like that. I was wondering if anyone knows what the compression is supposed to be at for this engine so I can perform a compression test on it. At least that way I can rule out bad piston rings (or perhaps that’s the problem).
Thanks for the help.


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80 PSI. Make sure you hold the throttle wide open, and your battery is cranking over good.

Leaky injector?
Have you checked the air filter to make sure it isn't clogged up?

 

[Thomas88]

I just checked the air filter today. Thank you for the information. I will be sure to check compression ASAP. Never considered a leaking injector. Thanks again


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[Russ989]

Hello.
I bought a pioneer 700-4 a little over a year ago and have about 850 miles on it. I’ve noticed over the last few months that the engine oil smells pretty “gassy”. I changed the oil, but it continues to smells like that. I was wondering if anyone knows what the compression is supposed to be at for this engine so I can perform a compression test on it. At least that way I can rule out bad piston rings (or perhaps that’s the problem).
Thanks for the help.


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I smell gas every now and then on mine, it’s done it since new and I think it’s the gas tank venting. Mine rolled over 617 miles today FYI.

 

[Thomas88]

I finally got around to checking the compression tonight. I did it with engine at (or close to) operating temperature. I got 115psi after four compression strokes, so all seems good there. I am wondering about the injector though. Perhaps it is leaking after I shut it off.


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[DG Rider]

I finally got around to checking the compression tonight. I did it with engine at (or close to) operating temperature. I got 115psi after four compression strokes, so all seems good there. I am wondering about the injector though. Perhaps it is leaking after I shut it off.


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It's easy enough to pull and see.

You're the 2nd guy with higher than listed compression. My spec was from a 2014 FSM. Wonder if the newer ones have more compression?

 

[DG Rider]

It's easy enough to pull and see.

You're the 2nd guy with higher than listed compression. My spec was from a 2014 FSM. Wonder if the newer ones have more compression?

Der!
I just realized what a silly comment I made. The 80 psi is probably a minimum spec.

 

[Thomas88]

No problem. I assumed it was minimum spec anyway. I really appreciate the info.


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[DG Rider]

No problem. I assumed it was minimum spec anyway. I really appreciate the info.


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No problem.