[APzY]

Hey Everyone,



I'm relatively new to this forum, i just bought a 1981 gl500 in running condition, minimal body rust, about 98% stock parts. I want to get this bad boy in optimal running condition. Oil looks clean and Air filter is clean. Since i bought it i've replaced the spark plugs, starter solenoid, rust treatment/cleaned the gas tank and fuel petcock, installed a fuel filter, i did sort of an incomplete carb clean where i just sprayed them out with carb cleaner got most of the grime out but the bottom of the float bowls still have some build up.



ISSUES:



*there is also a leak on the left fork, i'm waiting for seals i bought to come in then i will replace them on both forks and new ATF.



*The bike starts and runs, but there is some popping and occasional backfire, and above 5000 rpm the power just isn't there. I'm thinking to do a full carb clean (soak all the parts) when i get the replacement gaskets, and resync, as well as mixture adjustment, to see if this resolves the issue. any other suggestions?



*also i need new tires, i wouldn't want to take the pair i have over 45-50mph, any tire suggestions? i mainly use the bike to commute to work and school.



I'm looking forward to getting this running in tip top shape. I'll upload some pictures when i find my camera.

Thanks

 

[jasonh]

Instead of ATF, using 15w or 20w fork oil will firm up the front end a bit.



The full carb clean would be a good first step to the performance issues you're having. A member here has a book out on how to properly clean these carbs

 

[Abes_CW]

Some good GL fork seal info here.



http://choppercharles.com/cs/forums/98943/ShowPost.aspx#98943



Welcome

 

[bear351c]

Yep, as Jason said, a decent carb overhaul will fix many issues. They dont get many in 30 years, so, probably the best place to start. You will find the bike "most bodacious" after you do this. It will start easier, run better, accelerate faster and give heaps better fuel economy.



Shameless promo : Buy Larry's book !! (LRCXed). Worth every penny, or cent?

 

[philbrewer]

Check the stator too. I've read a few too many posts about these bikes having issues at high rpms and turns out stator was bad.

 

[philbrewer]

Check that. Just realized it's an 81 GL. I'd still check it.

 

[bear351c]

Agreed Phil, but, usually stator issues are found if the bike is at "normal operating temp" after riding an hour or so. I may be wrong (usually, according to Wife) but APzY said popping and backfiring, I would say is carb related.



Hope so anyway, stators a bit more work.