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Help, have spark, bike ran, now not so much

Fuel System: Gas (Petrol) tanks, Carburators
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am

Post by LOUD MOUSE » Fri Apr 18, 2008 10:02 am

??????????????????????????. ........lm

red75ride wrote:Do you have compression? The starting fluid may have cooked the piston enough so when you ran gas for 5 did the piston in.

red75ride Member
Posts: 17
Joined: Tue Mar 18, 2008 11:44 am

Post by red75ride » Fri Apr 18, 2008 10:37 am

Just a guess...but I have seen starting fluid blow holes in pistons if the engine was run for any length of time with just starting fluid. I bought a snowmobile from a guy who did that and replaced both pistons.....just a thought.

milwaukeephil Member
Posts: 126
Joined: Fri Apr 04, 2008 3:58 pm

Post by milwaukeephil » Fri Apr 18, 2008 10:46 am

I was very sparing with the fluid -- never ran it off starter fluid for more than about 2 or 3 seconds.

When it was running last night, it was sucking gas down the hose nicely...

At this point my plan is to replace the plugs and adjust the carb. Problem is I have no idea how to adjust the carb ;-)

Ford Guy Member
Posts: 98
Joined: Mon Nov 26, 2007 5:59 pm
Location: New Berlin Wisconsin

Won't start

Post by Ford Guy » Sat Apr 26, 2008 9:52 pm

Milwaukeephil Pm me I live close to Milwaukee maybe I can help.


Mike Mullins Member
Posts: 247
Joined: Thu Aug 02, 2007 9:24 pm
Location: Demotte IN

re: help have spark

Post by Mike Mullins » Sat Apr 26, 2008 11:10 pm

Have had similar experiences with other bikes. Problem was crum in the fuel system made its way to the carb and plugged the jets again. Check your pilots and make sure that they are not plugged again. Do you have inline filters on your fuel lines ? I had a CL 450 that I thought had a clean tank and would only run for about 10 minutes before the pilots plugged. Same problem with RD 400 till I cleaned the tank for 2nd time. Very fine rust was the culprit.

milwaukeephil Member
Posts: 126
Joined: Fri Apr 04, 2008 3:58 pm

Post by milwaukeephil » Fri May 16, 2008 2:12 pm

Hey guys, thanks for the replies -- I rely on email notifications to know when someone relied and somehow I didn't get any on this thread...

My tank is now Kreem-free and I rebuilt the petcock, so I don't need the funnel anymore. I'm down to just figuring out why I keep fouling plugs and I can't get it to run without the choke fully engaged.

I did notice some gas coming out of the float bowl overflow the other day, so wonder if it's my float level?

Anyway, I'm really close to having this bike in running shape, so this weekend will be dedicated to getting it on the road...


Foose Member
Posts: 13
Joined: Fri Aug 17, 2007 11:47 am
Location: State College, PA

Post by Foose » Thu May 29, 2008 6:17 pm

tuning carb consists basically of the air screw and the position of the clip on the main needle... the pw22 takes 1 to 1.5 turns out on the air screw, which is what i have on my 64 ca77; the other carb is something like 1 to 1.25 turns out.... hope that helps. as for the main needle, the bike needs to be running for you to really decide if youre rich or lean. if you kick it over and it wont start, take the carb off and if youve got raw fuel, move the needle leaner. no fuel, move it richer....hopefully this gets you running.

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