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  #21  
Old 05-10-2015, 10:28 AM
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biglefty biglefty is offline
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Originally Posted by dvogtvpe View Post
common problem with a common repair, why do you need a compression tester for a probable fuel issue ?
Just trying to have all the bases covered. Plus its something I should have in the future if I wont to keep these things running. Plus after looking at the invoice I would think there should be no problems with the carb. I HOPE
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  #22  
Old 05-10-2015, 10:53 AM
J-Mech J-Mech is offline
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Originally Posted by dvogtvpe View Post
common problem with a common repair, why do you need a compression tester for a probable fuel issue ?
One bank is running richer than the other. I suspect low compression on one side. I suggested testing compression.
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  #23  
Old 05-10-2015, 11:32 AM
Mike McKown Mike McKown is offline
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I installed new fuel line there. I started the thing up & ran it at half throttle for about 15 minutes. It now runs good at full & half & even does idle but just a bump up from idle the rpms still jump up & down.
If that carb has an idle mixture screw, I'd try to adjust the low speed and see if the engine would smooth out.

If it seems to be running well now, I'd shut the hood and not worry about it. You might look at the plugs again and see if the coloring is now the same side/side.
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  #24  
Old 05-10-2015, 11:51 AM
J-Mech J-Mech is offline
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Originally Posted by Mike McKown View Post
If that carb has an idle mixture screw, I'd try to adjust the low speed and see if the engine would smooth out.

If it seems to be running well now, I'd shut the hood and not worry about it. You might look at the plugs again and see if the coloring is now the same side/side.
Forgetting about it or ignoring a problem will not fix it.

The carb runs both cylinders, so the only way one side can run differently from the other if there is a problem with it. It won't just "get better" by adjusting the carb.
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  #25  
Old 05-10-2015, 12:03 PM
Mike McKown Mike McKown is offline
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The carb runs both cylinders, so the only way one side can run differently from the other if there is a problem with it. It won't just "get better" by adjusting the carb.
He said it appears to be running well now and will idle. That's why I suggested checking the plugs to see what they look like.

I can see you wanting to recommend another big money repair here on a 30-35 year old engine.

You do it your way and I'll do it mine. Thanks.
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  #26  
Old 05-10-2015, 12:23 PM
J-Mech J-Mech is offline
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I can see you wanting to recommend another big money repair here on a 30-35 year old engine.
I haven't recommended a repair as of yet. Just a compression check, which is pretty cheap. Might save him $$ later.


Yep, you do it your way and I'll do it mine. Meanwhile I'll try to save this guys motor for him while you tell him to just ignore it. Who's really helping?
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  #27  
Old 05-10-2015, 01:20 PM
Mike McKown Mike McKown is offline
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I haven't recommended a repair as of yet. Just a compression check, which is pretty cheap. Might save him $$ later.


Yep, you do it your way and I'll do it mine. Meanwhile I'll try to save this guys motor for him while you tell him to just ignore it. Who's really helping?
My bet is you will wind up wasting his money.

What are you going to tell him if he spends the $$$ for a compression gauge and and finds has low readings? Spend more $$$$ for a rebuild on a 30-35 year old engine?

Or what if he pulls the plugs and now, since the engine appears to be running much better, the coloring is closer to correct and consistent, side/side? Apparently he fixed something when he put the new gas line on because the engine is running better. If it turns out this be the case, then it's time to ignore his former issue.

That is what I said, not what you said I said.
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  #28  
Old 05-10-2015, 01:50 PM
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Sam Mac Sam Mac is offline
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Could have a bad head gasket on one side. OP can probably borrow a comp tester from an auto supply store. I didn't read that J-mech is suggesting that the OP spend big bucks, maybe I missed something? I seem to recall that he usually recommends doing a re-power rather than spend a lot of $$$ on these old engines. Carry on.
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  #29  
Old 05-10-2015, 01:52 PM
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Could have a bad head gasket on one side. OP can probably borrow a comp tester from an auto supply store. I didn't read that J-mech is suggesting that the OP spend big bucks, maybe I missed something? I seem to recall that he usually recommends doing a re-power rather than spend a lot of $$$ on these old engines. Carry on.
Hey I said that first!
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  #30  
Old 05-10-2015, 02:03 PM
J-Mech J-Mech is offline
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Could have a bad head gasket on one side.
That's what I'm betting. Cheap fix.


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I seem to recall that he usually recommends doing a re-power rather than spend a lot of $$$ on these old engines.
Yep. Unless it's a K series. Then we fix it.
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