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Old 01-19-2019, 06:29 PM   #43
LockDoc
The Older Generation


 
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Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,331
Re: Intermittent power loss (need help troubleshooting please)

Quote:
Originally Posted by trevarthan View Post
I'm excited because I finally found something that is definitely broken! Ha.

The heat riser valve spring is definitely broken:



Here's a quick video of me manually actuating it: https://youtu.be/IL0KQFsW2K0

I'm googling, but I'm having a hard time figuring out how important this is.

What affect will a broken spring have on engine operation, and what do I have to do to fix it?

Thanks!

The exhaust should open it up when the engine is running. The spring closes it. I would try an auto parts store for the spring. Not sure if you can replace it without taking it apart or not.... maybe.

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