Troubleshoot smoking with me?

fatcaaat

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Discussion starter · #1 · Dec 30, 2005

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So, I have this engine here that I just recently put together and it is smoking a lot. I have jetted it down and still the smoke remains. This is an 88 cc kit, brand new, e22 head



So, a general question for discussion.



What causes excessive engine smoke?

I know that worn valve seals and too much oil in the engine, and overly rich mixtures. Anything other than that?



I may go in and change out the valve seals, although, I am pretty sure I did that when I put this head on this bike.

 

mxracer728

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#2 · Dec 30, 2005

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worn piston rings??

 

fatcaaat

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Discussion starter · #3 · Dec 30, 2005

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Worn piston rings would be a good answer, but not in this case. The kit is brand new...

 

five0addict

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#4 · Dec 30, 2005

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impropely instaled rings or there not seating from synthetic oil

 

D

Dakota569

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#5 · Dec 30, 2005

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Age of the rings doesnt matter a bit , brand new rings that dont seat up correctly will smoke like a mofo ...

 

fatcaaat

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Discussion starter · #6 · Dec 30, 2005

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Well, I know the rings are installed properly, spaced accordingly, and installed right-side-up. Seating the rings...well, this has only been run for all of about 10 minutes. Should I just leave it alone and beat on it a while to see if they seat properly?

 

filthyboatguy

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#7 · Dec 30, 2005

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fatcaaat said:

Well, I know the rings are installed properly, spaced accordingly, and installed right-side-up. Seating the rings...well, this has only been run for all of about 10 minutes. Should I just leave it alone and beat on it a while to see if they seat properly?

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I think so, a good run within reason would probably do the trick.

 

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Dakota569

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#8 · Dec 30, 2005

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cant hurt, give it a try ... and like Stan said ,make sure you dont have synthetic oil in there for break in ...

 

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28m

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#9 · Dec 30, 2005

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Even with new rings and not yet seated, you might get a biu of smoke but not much. Jetting will make black or dark grey smoke. Oil makes white smoke.



With a new head and new rings, sounds to me like maybe a crack somewhere but my guess would be bad valve guides/seals. Bad guides/seals create much smoke!!



Just because it is new doesnt mean they are good.

 

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Dakota569

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#10 · Dec 30, 2005

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Ive seen a freshly built 450 with unseated rings completly fill a race shop with smoke in about 30 secs ...

 

fatcaaat

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Discussion starter · #11 · Dec 30, 2005

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this is me

Dakota569 said:

Ive seen a freshly built 450 with unseated rings completly fill a race shop with smoke in about 30 secs ...

Click to expand...

This is me...i have to take it outside to run it...

 

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28m

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#12 · Dec 30, 2005

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Dakota569 said:

Ive seen a freshly built 450 with unseated rings completly fill a race shop with smoke in about 30 secs ...

Click to expand...

The compression drop between seated and non seated rings is less than 5%. Engines with a single ring or light, race ring package might be a little more but as a whole, the oil seapage with 2 or three rings is USUALLY pretty minimal. Key word is "usually". There is always the exception and I don't doubt what you are saying.