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Old 07-04-2006 | 04:48 PM
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jsf125
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From: Pasco, WA
Default RE: Help with JJ-1400 acceleration delay??? maybe?

Well,

I took the engine to work and removed the glow plug so that I could get the scope inside to check things out, and felt a little relieved. The ends of the fuel sticks are still in tack, and in general everything looks to be in place. Just a few things caught my eye while I was looking around.

There seamed to be a lot of "soot" and "flaky stuff" collected especially on the ends of the fuel sticks. The best way I can describe it would be to relate it to very very dry skin or even a bad sun burn when the skin begins to peal. Is this normal?

The thing that concerned me the most I suppose would be the swirl jets and their relationship to the ends of the fuel sticks. I believe it is normal that there are half as many swirl jets and fuel sticks, and they alternate every other stick right? However, the relationship of the swirl jets to the fuel sticks was not consistent from one to another. They were close, but not in the exact same position. I am sure this is not ideal, but is it enough of a problem that is could be the cause of my troubles?

Something else that came to mind was case pressure. I started the engine and while it was idling, I put several drops of water right on the seam where the front cover and the outer case meet. When I did this, I did get some air bubbles. So, I took some electrical tape and tried sealing the area up, and still had no success. It would still do the torch thing on spool up. I then started it again and put some water drops on the electrical tape seams, and I still had air bubbles form, so I guess I didn't really seal it up very well after all.

The best thing I can think of right now is that the mixture is becoming to rich (excess fuel) on a fast spool up, and this is why is begins to burn on the outside of the engine. But, if it is powered up slowly, I am in a way babying it along until it reaches full power. Does this make sense? I wonder if this could be my problem.

Thanks in advance for any advice or help,
Brandon