Re: Motorcycle backfires inconsistently

> Born to be WillD Wrote:

> -------------------------------------------------------

> I did the valves, theyre spot on, but I think it was run for a while

> with them pretty out of spec and also the carbs pretty messy

Its possible that an intake valve was hanging open if the clearance was too tight and burned the seat or face of the valve. A compression test would show that. Cleaning carbs wont hurt either.

Re: Motorcycle backfires inconsistently

> Don Ohio Wrote:

> -------------------------------------------------------

> > live ɘvil Wrote:

>

> > -------------------------------------------------------

>

> > > Don Ohio Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > Change the spark plugs anyway, but it is probably valves. When that

>

> >

>

> > > happens on older cars, it is usually a cracked distributor cap or

>

> > rotor.

>

> >

>

> > One should "read" the current plugs first parts changer.

>

> Any good mechanic reads every single used spark plug. That goes without

> saying.

And if the plugs are good then there would be no reason to change them. I will admit that a cracked plug will cause a misfire. Been there done that.

>

> Well, did you check the cam chains condition?

A loose cam chain will make all kinds of noise before a misfire happens.

Re: Motorcycle backfires inconsistently

Changing plugs never hurts either.

Re: Motorcycle backfires inconsistently

10.5 to 1 compression. Do you have ethanol fuel in your area? All my high comp Jap bikes are very unhappy running on the new shit fuel we have to deal with these days. You have to keep fresh 92 or better fuel in the tank and usually the carbs have to be upjetted to compensate for the ethanol fuel. You could have hot spots/carbon preigniting the shit fuel if it is old or you are not using high test.

Re: Motorcycle backfires inconsistently

Also you say you have put three miles on it in a year. If I had an older Japanese Bike that sat around as much I would have to clean the carbs before every time I took it out. Did you drain the tank and put fresh fuel in it for each ride? Not trying to be a dick but maybe busting your balls ever so slightly.

Re: Motorcycle backfires inconsistently

> Don Ohio Wrote:

> -------------------------------------------------------

> Changing plugs never hurts either.

did you not read the OP? He did all of the things you've said and more.

Re: Motorcycle backfires inconsistently

> live ɘvil Wrote:

> -------------------------------------------------------

> > Born to be WillD Wrote:

>

> > -------------------------------------------------------

>

> > I did the valves, theyre spot on, but I think it was run for a while

>

> > with them pretty out of spec and also the carbs pretty messy

>

> Its possible that an intake valve was hanging open if the clearance was

> too tight and burned the seat or face of the valve. A compression test

> would show that. Cleaning carbs wont hurt either.

Yeah that was my personal leaning when i wrote this, I'm gonna check compression but this still makes most sense to me

Re: Motorcycle backfires inconsistently

> Norris Hall Wrote:

> -------------------------------------------------------

> Also you say you have put three miles on it in a year. If I had an older

> Japanese Bike that sat around as much I would have to clean the carbs

> before every time I took it out. Did you drain the tank and put fresh

> fuel in it for each ride? Not trying to be a dick but maybe busting your

> balls ever so slightly.

The 3 miles was due to a LIST of other issues I've had to correct haha, I did get it when it was "running" but it's needed a LOT of work, a lot of waiting on parts, a lot of ignoring it out of frustration to focus on other bikes.

And man, the draining of gas is giving me PTSD, the petcock is bolted to the inside ofthe frame and you can't get to any of the fuel lines with the tank on, so it involved a lot of spilling. It's a major pain in the ass - remove the fairings and seat, unbolt the tank, you got no room to get to the lines with them attached to the tank, theyre hidden under the battery box which you can't remove til the tank is off. So your options are yank the fuel line from the tank and try'n quickly try to reach in under and swap the fuel line to a longer one to drain it, or unbolt the petcock and try to weasel it out from behind the battery box while holding the full tank up and trying not to drop it. Both led to much spilling

Re: Motorcycle backfires inconsistently

> Born to be WillD Wrote:

> And man, the draining of gas is giving me PTSD, the petcock is bolted

> d to the inside ofthe frame and you can't get to any of the fuel lines

> with the tank on, so it involved a lot of spilling. It's a major pain in

> the ass - remove the fairings and seat, unbolt the tank, you got no room

> to get to the lines with them attached to the tank, theyre hidden under

> the battery box which you can't remove til the tank is off. So your

> options are yank the fuel line from the tank and try'n quickly try to

> reach in under and swap the fuel line to a longer one to drain it, or

> unbolt the petcock and try to weasel it out from behind the battery box

> while holding the full tank up and trying not to drop it. Both led to

> much spilling

Buy one of those electric fuel pump things, my grandpa bought one cause he was sick of dealing with that. They're relatively cheap. Something like this:

https://www.amazon.com/dp/B00318D7K8/

(edited)

Re: Motorcycle backfires inconsistently

Yeah I have started spending WAY too much money on tru fuel. I am so sick of this ethanol shite. I may try the water blending to remove the Ethanol technique. getting desperate, I am getting PTSD from E10 fuel! I can't even imagine the B.S. if they switch to 15%, I run alot of older high performance high compression cars and bikes and it has gotten pretty ugly with the Ethanol in the fuel.

Re: Motorcycle backfires inconsistently

> Nick MBC Wrote:

> -------------------------------------------------------

> > Born to be WillD Wrote:

> Buy one of those electric fuel pump things, my grandpa bought one cause

> he was sick of dealing with that. They're relatively cheap. Something

> like this:

>

https://www.amazon.com/dp/B00318D7K8/

Oh man that moment when you realize they make exactly the thing you needed and its cheap and you’re a dummy

Re: Motorcycle backfires inconsistently

Good luck with it. I bought one of the cheap hand pump ones and I think I used it once and a coupe weeks later I went to use it again and the ethanol had completely destroyed the seals in it.

Re: Motorcycle backfires inconsistently

> Norris Hall Wrote:

> -------------------------------------------------------

> Good luck with it. I bought one of the cheap hand pump ones and I think

> I used it once and a coupe weeks later I went to use it again and the

> ethanol had completely destroyed the seals in it.

Ethanol is no good. Just say no.

Re: Motorcycle backfires inconsistently

Let's just both get pc800's Will. Or burgman 650 executives. You can throw the tdm in the trash and we'll ride our couches into the sunset.

Re: Motorcycle backfires inconsistently

I love that dream so much. I love you forever nick and whatever we'd ride I cherish the idea that I could ever be so fortunate as to have people in my life who would love as much as I would sharing that ride

Re: Motorcycle backfires inconsistently

> Don Ohio Wrote:

> -------------------------------------------------------

> > Norris Hall Wrote:

>

> > -------------------------------------------------------

>

> > Good luck with it. I bought one of the cheap hand pump ones and I

> think

>

> > I used it once and a coupe weeks later I went to use it again and the

>

> > ethanol had completely destroyed the seals in it.

>

> DoNoHiO is no good. Just say no.

Re: Motorcycle backfires inconsistently

Love you forever too, homie. Someday!

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