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-   -   New motor fires up, on one cylinder (http://www.advrider.com/forums/showthread.php?t=833673)

Qwik 10-12-2012 12:33 PM

New motor fires up, on one cylinder
 
trying to figure out why. put in different coil and plug to no effect. Front cylinder exhaust gets hot rear does not..any ideas?

NKL 10-12-2012 01:46 PM

Fuel in carb?

TcRulz 10-12-2012 02:45 PM

You could take the air cleaner cover off and pour a cap full of fuel in the rear carb throat and see if it fires on that:eek1 or might be safer to pull the rear coil stick and stick another known good spark plug in it (making sure its earthed) and see if it sparks:D. Has to be fuel, spark or compression all working at the right time. Good luck.

NKL 10-12-2012 03:20 PM

Just read the title again, what do you mean "new motor" and I assume nothing else has changed, carbs, electrics, ignition.

Qwik 10-12-2012 09:12 PM

Replacement motor. Original electrics that worked fine with the old motor. Old carbs as well. Gonna try dumpin fuel down the carb and see if that works

Head2Wind 10-12-2012 10:12 PM

Did you check the valve clearances and/or verify that the cams are installed correctly? If the seller is considered trustworthy, then this shouldn't be a issue if they were selling a known good running engine. But generally a good idea to verify and establish a baseline of known settings.

Also, depending on how long the bike was apart for the engine transplant, the fuel may have fouled the jets or stuck the float. If there is no fuel in the float bowl, then the needle is stuck in the seat.

bykpimp 10-12-2012 10:36 PM

Verify you have spark in both cylinders, if so move along to fuel, compression, oxygen.............

NKL 10-13-2012 11:16 AM

Quote:

Originally Posted by Head2Wind (Post 19807413)
Did you check the valve clearances and/or verify that the cams are installed correctly? If the seller is considered trustworthy, then this shouldn't be a issue if they were selling a known good running engine. But generally a good idea to verify and establish a baseline of known settings.

Also, depending on how long the bike was apart for the engine transplant, the fuel may have fouled the jets or stuck the float. If there is no fuel in the float bowl, then the needle is stuck in the seat.

Took the words out of my mouth.

Qwik 10-14-2012 11:52 PM

Had a few minutes to mess with it today. Poured a little gas down the throat of the rear carb. Cranked it a bit and it coughed and fired on both cylinders. Gonna pull the carbs off and clean em up. Obviously some debris in the system that has it plugged up. It didnt sit long enough to gum up before I drained the Carbs.

Dustodust 10-15-2012 02:38 AM

it helps to run it with just the left tank on until you get it dialed , you can see what the carbs are doing and have access to them

Qwik 10-15-2012 01:37 PM

Yup. Only have the left Safari tank on. New carb clamp came in today as well. ( old one stripped but its on the front carb with a different screw/nut making it work.

Narsisco Lopez 10-15-2012 04:28 PM

Quote:

Originally Posted by Dustodust (Post 19819908)
it helps to run it with just the left tank on until you get it dialed , you can see what the carbs are doing and have access to them

Quote:

Originally Posted by Qwik (Post 19823759)
Yup. Only have the left Safari tank on. New carb clamp came in today as well. ( old one stripped but its on the front carb with a different screw/nut making it work.

Carb? What's a carb????

Oh! You mean those old-fashioned things my great-grandfather's Edsel used to have to shoot gas into the pistons! :lol3

Qwik 10-15-2012 06:41 PM

Doesn't shoot gas it drizzles it

Qwik 10-15-2012 09:24 PM

Tossed some sea foam in the tank to see if it will clean the jets/carb up a bit. It's poppin a bit and doesn't want to run off choke.

TA-Zappa 10-16-2012 03:19 AM

Quote:

Originally Posted by Narsisco Lopez (Post 19825009)
Carb? What's a carb????

Oh! You mean those old-fashioned things my great-grandfather's Edsel used to have to shoot gas into the pistons! :lol3

Exactly, the ones that doesn't give you whiplashes from normal use...

:huh

/Zappa


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