Im burnin some oil here

[96lt1]

hey guys, my green plus is burnin oil like a champ. probably a quart every 300 miles if not more. i know it needs a 60k tuneup but i am wondering if that is linked to the oil burn. the plugs and wires arent great, its not leakin it though, it is burning it. what r some common problems that would lead to oil burning?? could my rings be bad?? the motor has 174k on it. it ****** me off because my red 89 has the same milage and it runs like a ***** ape. i am gonna tune it up here as soon as i can get a spot cleared in my garage. anyone have any ideas on what to check for?? im gonna be ****** if i gotta tear into the internals of this motor to fix the problem. this is my daily driver for the next 4 months.

thanx

Sean thumb

 

[projectSHO89]

The "60K" will not address oil burning.

Excessive oil consumption will be one or more of the following:

Oil rings - requires a ring job to repair

Valve stem seals and guides - seals can be replaced in situ. Guides require head removal.

PCV system - can suck oil into the intake.

The first two can be diagnosed with a combination of vacuum and wet/dry compression tests. The PCV system can be disabled to remove it as a possibility.

 

[DHMag]

projectSHO89:
The "60K" will not address oil burning.

Excessive oil consumption will be one or more of the following:

Oil rings - requires a ring job to repair

Valve stem seals and guides - seals can be replaced in situ. Guides require head removal.

PCV system - can suck oil into the intake.

The first two can be diagnosed with a combination of vacuum and wet/dry compression tests. The PCV system can be disabled to remove it as a possibility.

Steve,
i was informed that the heads do not have to be removed to do the valve stem seals. apparently there is an "essential tool kit" that includes a stem seal removal tool. though when i did my stem seals, i removed the heads...was replacing head gaskets anyway.

 

[MotoArts]

Hey Sean,
Remove the oil fill cap, start it up and see how much pressure comes from the engine out of the hole. If it shoots a bunch of air/vapor like a smokestack, you have excess blowby. It could be pressurizing the crankcase too much, pushing oil past the rings.

 

[masho95]

Are you sure it's not leaking oil? 1 quart per 300 miles is very excessive. I would guess that it didn't run quite the same as a "normal" SHO. Perhaps the oil might be leaking onto the exhaust and burning it off while running so you don't notice a leak? If it's internal and burning that much I'd swap the engine rather than rebuild!

 

[projectSHO89]

Dale,

There was a reason I used the term in situ . http://dictionary.reference.com/search?q=in%20situ

Steve

<small>[ December 04, 2003, 11:47 PM: Message edited by: projectSHO89 ]</small>

 

[SHODWN]

WTF is with the dictionary reference?

 

[96lt1]

masho95:
Are you sure it's not leaking oil? 1 quart per 300 miles is very excessive. I would guess that it didn't run quite the same as a "normal" SHO. Perhaps the oil might be leaking onto the exhaust and burning it off while running so you don't notice a leak? If it's internal and burning that much I'd swap the engine rather than rebuild!

nope, its not leakin...for the record, it runs like *** .....i bought this thing to drive, this is the one sho i was hoping to not have to do major motor work.... slap what can i do......

Sean

 

[MotoArts]

Did you do the blowby check? Or the PCV valve/hoses? If they check out OK, then do a dry/wet compression check. That may or may not work, since the oil rings (lower ones) may be stuck and the compression rings not.

It could be a slipped intake gasket. When you pull each spark plug, there might be one or 2 that are totally cruddy compared to the others. Try tightening the intake before removing it. You might get lucky and the gasket be ok, and not sucked in (missing a piece).

 

[rangerj]

Gentlemen,

Steve is quite right, nulum est erratum! hail rangerj