Calling All Wrenchheads

[wrag]

Does this puppy have a onboard computer?

Did you ever disconnect the battery?

Word I got from some mech types is......

If you ever disconnect the battery without that 9volt doohicky connected in some way to your system the computer zeros out.

To get it back where it should be run the vehicle for about 1 hour at idle and the computer SHOULD reset itself.............

BUT it does sound like you have an oil problem?

[Bronk]

Been a while since I messed with diesels.

Possible leaky injector I think. At low rpm it can load up and burn off in the exhaust. It will be a white color not black like if it were rich.
While at high rpm it is all burnt off.

[wrongwayric]

My money is on valve seals. PCV valves are cheap and very quick/easy to change on most vehicles. Go buy one or take it to a shop will take all of 20min tops for them to put a new one in. Change that and rule it out. I'm still betting a leaking valve seal. Your looking at some bucks if you have that problem especially if you do the repair right. If i remember right rings usually will show a dark smoke were valves usually show white. I could be wrong though.

[Masherbrum]

Well, I've ordered a service manual for my Suzuki Carry. It's in the mail. Before it gets here I have a problem I need to diagnose. When I run my engine at road speeds, it runs fine. When I run it at low throttle or idle like when I'm crawling along in 4x4, it smokes. The smoke clears up quickly when I pick up the rpm's. No water in the oil or oil in the water. No visable seal leaks. The amount of oil loss is not major (1 pint in 600 miles). I'm going to pull the plugs Monday and see what they look like.

My initial thought was rings, but would that clear up at higher rpm's? Does'nt ring smoke usually increase with engine speed?

My second thought was some sort of pcv/ vacuum line issue.

Any suggestions?

My AMC 304 did this when I had my 83 CJ7.    The answer is simple, the valve seats are bad on your engine.   This isn't an issue to be worried about......yet.

[WWhiskey]

 i dont know about this motor but you used to be able to put an umbrella on the valve stems to help with this problem (circa 1990 chevy small blocks) a little less work to help cure the smoke on near brand new heads! might be something too look at but i still think pvc first then valve stems second!

[FrodeMk3]

BTW RPM, have you been having to add oil on a regular basis (like a quart a week?) That helps' with the guessing.

[Holden McGroin]

Does it smoke more when the gas tank is half empty than it does when it is half full? -- Click and Clack

[rpm]

OK, a few quick replies before I head to work.

It's not a diesel. 3 cyl Suzuki J6A gas engine

Not sure about a computer. Have to wait for the manual.

I have added a pint of oil in 600 miles.

Originally posted by DiabloTx
This thread is WORTHLESS without pics!!!!!!!!!!!

Here ya go Diablo:

I don't have any 4wheeling pics yet.

[SD67]

Hey RPM, It's not a 2 stroke is it?
Just askin to be sure

[SIK1]

The smoke sounds like valve guides too me.

It has a computer if it is EFI the E stands for electronic.

[rpm]

Sik, I ment diagnostics computer. I don't think it has an OBD2 connection.

[CAP1]

Well, I've ordered a service manual for my Suzuki Carry. It's in the mail. Before it gets here I have a problem I need to diagnose. When I run my engine at road speeds, it runs fine. When I run it at low throttle or idle like when I'm crawling along in 4x4, it smokes. The smoke clears up quickly when I pick up the rpm's. No water in the oil or oil in the water. No visable seal leaks. The amount of oil loss is not major (1 pint in 600 miles). I'm going to pull the plugs Monday and see what they look like.

My initial thought was rings, but would that clear up at higher rpm's? Does'nt ring smoke usually increase with engine speed?

My second thought was some sort of pcv/ vacuum line issue.

Any suggestions?



 

what color smoke?

[Shuffler]

I'm thinking your oil rings are worn (or cylinder wear). You may even have a ring that is cracked. I'm not familiar with the imports but an engine is an engine.

I don't think it is leaking at the guides as that usually causes smoke only on startup.

While a compression test can tell you of worn or cracked compression rings, it won't let you know the state of the oil ring. If it is wear then all the plugs will be about the same, if one cylinder has a cracked oil ring you'll notice heavy carbon deposits on that plug.

Good Luck 

[JTs]

my cummins drove me crazy. crankcase breather was plugged up

[SIK1]

rpm the neat thing about having computers in cars is they all have onboard diagnostics, in one form or another. Granted OBD2 monitors way more parameters, and is usually easier to scan, but if you know how, you can get the computer to tell you what you need to know. Probably why you're waiting for the manual, (sooner or alter things sink into my thick skull).

Shuffler I don't think it's rings because he said it clears up at high rpms. At high revs the crankcase pressure goes up which if the rings are bad causes oil to blow past them thus causing smoke.