OK. Hey guys. searched. im running a mikuni 44 and its been great until the other day. went for a drive and ended up getting down on the brakes pretty hard at one point. didnt think too much of it til i smelled fuel about an 1/8th mile later.

get out check under the hood and theres fuel *puddled* right above the plugs on the motor.....? immediately cut it. pulled the air cleaner off, nothing stuck in the jets that i can see. clean everything up replace air cleaner. 1/8th mile later, same thing. never done this before and been running like a champ til now.

any ideas? it seems to be fine til i either take corners or put the engine under load...itll idle fine no leaks for 20 mins...as soon as i start driving though i smell fuel and have to clean up...

sorry for the halfass typing, just dislocated my shoulder this morning and am typing with one hand....thanks in advance guys!

zach

 

ps its a 12A sp...on an 85

 

Only time I've had leaking problems on a Mikuni is when the fuel pressure went way over 6 psi and started pouring out of the velocity stacks. Other than that, check the gasket on the jet cover, then the one for the top cover.

 

+1 the only time I ever had flooding was when the fuel pressure was set too high...

 

bump...thanks guys. if anything i'd be scared the fuel pressure was too low- i still haven't gotten an aftermarket fuel pump and am only running a fpr set for stock pressure at 3.5. hmm im stumped. ill have to con a buddy into helping me pull the carb off..the cars currently stuck at school...bummer.

i cant even drive my car! stupid shoulder!! arg!!

 

Is 3.5 too high? You may want to try adjusting the pressure down and re-jetting. I don't know about Mikunis but 3.5 is too high for a Sterling.

 

3.5 psi is not too high. I run mine at 4.25 psi.

 

yea 3.5 is not too high... its actually kind of low, but just walked a buddy of mine through pulling his first carb so ill be catching a ride home here pretty soon and ill be single handedly diving into this little b and if i cant figure it out i guess i'll just quit being broke and buy the correct jets for the weber and rock that......finally....meh. why cant we go back to the barter system?

 

Only other advice I can give then is recheck your floats and needle/seats. They must be sticking. Since there is only 1 needle/seat on the Mikini, that's the most liikely cause if fuel is coming out of both intake barrels, other than fuel pressure.

 

thanks trochoid- will be the task for tomorrow...great advice tho! thanks! will post back with findings tomorrow, now to finish that hw pop some more pain meds n try n sleep....