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Started By
Message
Need some small engine help
Posted on 4/9/13 at 9:41 am
Posted on 4/9/13 at 9:41 am
Ok I am proficient around engines but this one has me stumped. My lawnmower has a B&S Quantum 6hp engine. It's been acting up so I removed the carb, cleaned it, bought a new needle and seat. Reinstalled. I've checked everything I can and there is only one issue with it. It has a cracked intake manifold (little intake pipe). I repaired that. My mower will run about 15 minutes, then stop and it's smoking like it's running ridiculously hot for some reason. Help
6
Posted on 4/9/13 at 9:42 am to Broke
Does it have oil?
And do you wave at other B&S engine owners?
And do you wave at other B&S engine owners?
Posted on 4/9/13 at 9:46 am to Broke
There should be some kind of fan or something on the crank to pull air over the engine. That might be missing.
Laser thermometer is pretty helpful for this kinda shite.
Laser thermometer is pretty helpful for this kinda shite.
Posted on 4/9/13 at 9:48 am to TexasTiger
quote:
Does it have oil?
Yes it has oil.
quote:
And do you wave at other B&S engine owners?
Posted on 4/9/13 at 9:48 am to DownshiftAndFloorIt
quote:
There should be some kind of fan or something on the crank to pull air over the engine. That might be missing.
It's a push mower.
Posted on 4/9/13 at 9:57 am to Broke
Too much oil?
Posted on 4/9/13 at 10:03 am to Hammertime
quote:
Too much oil?
No. But I am going to change the oil this evening just to make sure I have totally fresh oil. It's just running ridiculously hot and I can't figure out why.
Posted on 4/9/13 at 10:04 am to Broke
It should still have some kind of fan deal on top the engine to pull air over it.
Posted on 4/9/13 at 10:05 am to DownshiftAndFloorIt
quote:
It should still have some kind of fan deal on top the engine to pull air over it.
Agreed ..maybe its not spinning
Posted on 4/9/13 at 10:07 am to TexasTiger
Rats also love to eat the blades off of them.
There could also be something restricting airflow over the engine.
If it's running hot all you can do is get more airflow.
There could also be something restricting airflow over the engine.
If it's running hot all you can do is get more airflow.
Posted on 4/9/13 at 10:10 am to Broke
Had a similar problem last year, replaced the carb, worked fine after that.
Talked to a guy that does small engine repair, he said the B&S carbs just dont hold up well after a couple years, no way to fix them, just replace.
Talked to a guy that does small engine repair, he said the B&S carbs just dont hold up well after a couple years, no way to fix them, just replace.
Posted on 4/9/13 at 10:16 am to Broke
quote:
My mower will run about 15 minutes, then stop and
Had a boat motor do that with a cracked head. Would run great until it warmed up and expanded and lost compression. Let it cool off and go again for a few.
Posted on 4/9/13 at 10:17 am to Broke
I have 1 6hp Quantum motor I took off a pressure washer I'll let ya have.
Just paying it forward.
Just paying it forward.
Posted on 4/9/13 at 10:28 am to DownshiftAndFloorIt
I'll strip it down to the flywheel and see whats up
Posted on 4/9/13 at 10:29 am to meauxjeaux2
quote:
I have 1 6hp Quantum motor I took off a pressure washer I'll let ya have.
Just paying it forward.
I can't take your engine man. That's too much.
Posted on 4/9/13 at 10:31 am to Broke
quote:
cracked intake manifold
quote:That intake may not be as "fixed" as you think. This can cause the engine to run really lean (and hot). It can also lead to a nice moon crater in the top of your piston. Pull that plug and look for signs of lean running conditions.
running ridiculously hot
Posted on 4/9/13 at 10:34 am to Broke
quote:A fellow OB'er hooked a brotha up with an outboard,I'm just paying it forward. I have no projects I am using it for right now.Just gotta make sure the shafts are the same length.Either way,you could take the parts you need off my running motor and put them on yours.
I can't take your engine man. That's too much.
Posted on 4/9/13 at 10:34 am to DonChowder
I agree . I think you still have intake issues and you are running too lean or too rich .
Posted on 4/9/13 at 10:44 am to meauxjeaux2
Very generous. Let me try to replace the intake tube and if that doesn't help, I'll be in touch.
Posted on 4/9/13 at 10:58 am to TexasTiger
quote:
And do you wave at other B&S engine owners?
This post was edited on 4/9/13 at 11:00 am
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