Robin Engine Problem

[BobRip]

Adjusting the backlash on valves is not difficult. The coil replacement is not bad if you cut the intake shroud in half horizontally. If your engine is not using a lot of oil I would get it fixed. Good luck whatever you do. I see you are pretty close to Tazewell so yeah take it back.
I eventually put a new engine in mine. It was using a lot of oil and hard to start. I now have a new engine, but still a Subaru.

 

[BobRip]

By the way valve backlash adjustment is a routine maintenance item. I don稚 know the interval offhand, but this is something you probably want to learn.

 

[MossRoad]

I thought I recall someone mentioning something like 500 hours.

 

[BobRip]

I looked it up and it is 500 hours.

 

[larrydman]

Welp, I'm about 1200 hours late. I keep up with oil and filter changes pretty good, but past that I'm pretty much lost. I'll have to youtube it or hunt down some instruction. I do wonder if folks are having the same problems with the new Kohlers as we have with the Robins (vapor lock, hard cold starting). You're right Bob about keeping it of course, it doesn't use any oil and generally runs and starts good until now (after guys on here helped me fix the above mentioned problems). But it sure is tempting for a non-mechanic like me.

 

[cqaigy2]

I wouldn't have replaced my Robins engine if it hadn't died, but i'm really happy that i replaced it with a Koehler.

 

[woodlandfarms]

Sorry. 1700 hours?

 

[ponytug]

Think of it like a car with ~100,000 miles on it.

 

[4570Man]

Buy a coil tester. They’re less than $10 I’ve seen plugs that still sparked when pulled out and tested using the plug, but were causing a miss. I’d be inclined to think it’s a coil. You could try swapping them side for side. I don’t think fuel is the issue since it was running fine before. It could also have bad compression but also not likely since it was running fine before. I put my money on bad coil or spark plug. 1700 hours is a lot for cheapish gas motors, but I don’t think it’s scrap yet.

 

[4570Man]

I bought a coil tester with an adjustable gap like this one to troubleshoot a vehicle with a miss. The good coils could jump about an inch gap. The bad one was only jumping about a 1/8 gap. I doubt that’s how the tool is supposed to be used but it made a believer out of me that just seeing a spark wasn’t everything. Changing the coil that was only jumping a 1/8 gap fixed the problem.