Right cylinder barely firing

[Dflynn926]

I was riding up in silver lake this weekend and after a couple hours of riding, we took a break. When we went back out, i noticed my temp was not getting above 150 or so. Then I notice a slight pinging or something coming from my right cylinder (brake side) and the pipe was much cooler and I was not spooling very well. The exhaust was barely putting any pressure out.

 

Any ideas? I'm going to check compression and my reeds.

 

 

Ps. I was running premium gas with yamaha lube 2stroke at 32:1. My compression since I got the bike was 110 on left and 108 on right. I was planning a rebuild later this year. I also check spark and put new plugs. I also took off and cleaned that carb.

Edited April 3, 2017 by Dflynn926

[RIPPIN' IT UP]

Blocked pilot jet.

 

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[Dflynn926]

Blocked pilot jet.

 

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I was able to get carb cleaner through it though? When I take it off again ill try cleaning it out again

[RIPPIN' IT UP]

I was able to get carb cleaner through it though? When I take it off again ill try cleaning it out again

When is this cylinder barely firing, at idle, mid or high rpm's

 

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[Ayesully810]

Compression check, then Be sure to check reeds to see if you have any serious chips or missing pedals, was chasing my tail once bc i didnt check those sooner. Pull carbs off inspect all jets and intake components before moving on to electrical.

[Dflynn926]

When is this cylinder barely firing, at idle, mid or high rpm's

 

 

It seemed like it was almost constantly. The exhaust seemed to never get hot, or really be pushing pressure out the tail

[Dflynn926]

Compression check, then Be sure to check reeds to see if you have any serious chips or missing pedals, was chasing my tail once bc i didnt check those sooner. Pull carbs off inspect all jets and intake components before moving on to electrical.

Going to check it tomorrow night. Out of town right now. I don't think it is electrical though.

[Dflynn926]

Ok, got like 103psi. Which is what it has been since I bought the bike. Reeds were not chipped or warped...

[Dflynn926]

Ok just checked spark, and the right wire isn't producing any spark...

[Ayesully810]

Ok just checked spark, and the right wire isn't producing any spark...

Un screw and pull off spark plug boots. Cut quarter inch of wire off, lube with dielectric grease, put boots back on. Try again

Edited April 7, 2017 by Ayesully810

[Dflynn926]

Un screw and pull off spark plug boots. Cut quarter inch of wire off, lube with dielectric grease, put boots back on. Try again

I will put grease on them. I cut some off the other day though

[sleeper06]

Doesn't mean boots are good or u did it rite. If your not checking it with an ohm meter as your going your guessing

[Dflynn926]

I swapped boots and left side still had good spark. Im going to be checking with ohm today. What are the numbers to look for?

[sleeper06]

Take boots off , set meter on kohm, stick leads to each wire look for between 4-7kohm. Put one boot on at a time testing as you go so you know if first boot is good. You can also test boot, stick one lead where wire goes and one where plug goes you should get same reading as touching two leads together

[Dflynn926]

Take boots off , set meter on kohm, stick leads to each wire look for between 4-7kohm. Put one boot on at a time testing as you go so you know if first boot is good. You can also test boot, stick one lead where wire goes and one where plug goes you should get same reading as touching two leads together

OK tested the boots, one was bad. Bought two new ones. Good spark. Started up. Right cylinder still seems to have asthma