Trouble removing the carbs- Allen heads starting to strip 1995 sportster

[InDebtJet]

Any one have any ideas of thoughts? I used wd40, a breaker bar, an air impact, was only able to break one loose. I can feel the heads starting to lose their edges and have a little bit of play. I was hoping to rebuild the carbs and get my boat out! Not looking good. Went and got some carb cleaner and fuel additive, hopefully that helps but im sure they need to be disassembled, cleaned and rebuilt.

Thanks in advance

kyle

 

[scooper77515]

They will most likely break before you get them out.

Don't use brute force. Wait til someone suggests a chemical means to break the bond between bolt and block.

The stainless bolts create an electrolysis over time with the aluminum heads and block, and they basically weld themselves together.

I destroyed an entire set of heads and jugs trying to get the bolts not just unthreaded, but unwelded where the unthreaded parts contact the aluminum.

Hopefully someone will chime in with a way to break these loose for you, but I can almost guarantee that if you use muscle, the bolts will break before they come loose.

Always use grease or anti-seize in the future when reassembling. use it along the entire length of the bolt, and not just on the threads.

 

[InDebtJet]

Thanks for the reply, they probably haven't been touched in 15 years. Hopefully I can find a way to get them out or magically the boat starts running smooth haha. I will keep an eye on the thread and not force them any more. Thanks for the heads up

 

[scooper77515]

Sorry to give you that bad news. One of the suckiest parts about working on these things. Especially on older machines and even worse on ola saltwater ones.

I have never tried it but have good results from 50/50 acetone/atf mixture. Sure would not want to use heat on it afterwards. Not sure if it would work on this kind of bind.

Wait until someone chimes in with definitive method first.

 

[seadooya]

getta soldering gun, and heat up the bolthead.

 

[scooper77515]

So, heating to expand and letting it cool will break up the corrosion?

I used propane torch, then oxy-acetylene on mine, and still didn't work.

 

[InDebtJet]

So I put fuel system cleaner in the gas, sprayed carb cleaner in the carbs and ran the boat out of the water and had some sludge come out the exhaust. The idle seems high and I can only get it to come down with the choke which seems strange. Also when I increase the throttle the revs are staying high even when I pull the throttle back down. Is this just because its out of the water? thanks

 

[scooper77515]

going to idle around 3000 out of water, it will drop to 1500 when in water.

it should rev, but come back down to 3000.

Throttle could be sticking at carb?

Also, be careful revving out of water or you can get a runaway accelleration on you which will not stop even if you pull the DESS key. That is a lean condition that our 2 strokes do.

It will usually stall out when you choke it.

So it sounds to me like you may be just needing to adjust the carb to rich things up a bit.

Hard to tell without actually being there...

But at least it is running!