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Unread 12-31-2012, 10:46 AM   #1
Neuner-9R
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Smoke out of the Breather

Have a K&N filter breather which lightly sputters oil and exhaust when RPMs start to reach 2k. Going to try and replace the PCV tonight. I'm afraid that the amount of smoke is not normal and the rings are going bad? How much is too much?

Still trying to figure out all that the PO has done and if there may be other issues. The engine runs well and has power until I try and get up on it and then it sputters. Only the tank line is connected to the canister. Is this correct?

Thanks for the help,
Neuner

p1050523_800.jpg   p1050522_800.jpg  
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Unread 01-01-2013, 04:26 AM   #2
RWise
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Have you ran a compression test?
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Unread 01-04-2013, 02:16 PM   #3
Neuner-9R
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Was hoping to this weekend but with the cold and some surprise visitors I don't think I will. Kindof don't want to because I'm afraid of the results. It runs good and has power so I'm trying to be optimistic.
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Unread 01-06-2013, 04:30 AM   #4
RWise
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Did you enjoy the snow? PCV changed? Did it help?
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Unread 01-06-2013, 05:59 AM   #5
Matt1981CJ7
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I don't see a carb bowl vent line to the canister, nor a return line on the fuel filter.

The combination of both of these could be part, or all, of the problem, including your WOT problem.

Matt
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Unread 01-06-2013, 01:58 PM   #6
Neuner-9R
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The PCV change didn't help anything even though it did seem gummy. Was only able to test the first two cylinders which were 125 and 110 consecutively. Hoping to test again some time soon.

Thanks Matt for the suggestion. I'm going to look into it. I was considering replacement of the canister and making all of the of correct connections but I'm still confused by the Nutter Bypass and was wondering if that was part of the PO's efforts?

The 'blizzard' stopped shy of us by about 30 miles

I'm also in the middle of painting the exterior which is taking longer than I had hoped. It wasn't until I had the hood off and backing out of the garage that I noticed the breather smoking.
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Unread 01-07-2013, 03:34 AM   #7
RWise
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110 is low, should be 120-150, 90 and above will run, lets see the rest,,,,,.
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Unread 01-07-2013, 04:53 AM   #8
BagusJeep
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They do smoke, sometimes it can be condensation.

If you have the throttle full open when compression testing then factory spec is:

120-150 psi , no more than 30psi variation between cylinders.

those results woudl not have alarmed me.

If you are running the mechanical pump you should put the 3 way filter back in and connect the tank return. You may be getting air locks with the system set up as it is.

Teh tank vent line going to the canister by itself will not affect running, but it is not doing anything.
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Unread 01-08-2013, 04:50 AM   #9
RWise
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Also, pull the pcv, look into the hole, what do you see?

If there is not a shield below the hole oil can be thrown up off the rockers and sucked into the carb,,,,, I think this would fit well with the 2k rpm,,,, and costs nothing to check!
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Unread 01-08-2013, 11:22 AM   #10
Neuner-9R
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Thanks for the suggestions, I greatly appreciate it. Wishing I could react faster. So much going on right now. Anxious to make the hose connections to see if or how this changes things. Hopefully this weekend when it's suppose to be 75! - but then a great time to paint before it gets nasty again.

I stopped checking the other cylinders because the loaner from Autozone was pissing me off. Would like to get my own but I hate to drop more than $60 on a tester right now. I know you get what you pay for so I'm being cautious. Any suggestions?

Not sure of what you mean by a shield for the PCV.
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Unread 01-08-2013, 11:51 AM   #11
TxJeeper20
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Ckeck harbor freight ... I know its crappy tools but if it only needs to work once go for it ... if you make a living off of using the tool buy elswhere
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Unread 01-10-2013, 02:38 PM   #12
Neuner-9R
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Trying to avoid some guess work and add'l runs to the shop and since I'm missing several and can't compare, can you help with the sizes required for the following hoses?

- Vapor Vent to Canister
- Add'l ported vacuum source from Weber to Canister
- What the PCV to carb and canister should be
- Return line from fuel filter to the tank
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Unread 02-12-2013, 11:56 AM   #13
Neuner-9R
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Got a new canister, fuel filter and made all of the hose connections. Still coming out of the breather but not nearly as much. Found a better compression test loaner from O'Reilly that I can hopefully get soon.
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