Are backfires always loud?

S

Soggydog

New member
Joined
Jan 6, 2011
Messages
6
Location
Minnesota
Hi, new guy here. This year I bought a 2001 SX600R with only 525 miles on it. It is great, I love it.

But it seems when I am going slow I hear what I think are muted backfires. They are not anything like when I start it up and get the occasional sonic boom backfire, it is more like a series of mouse farts.

I'm I just imagining things? I suppose I could just keep the speed up.

Anyone else hear something like muffled backfires?

Jim in Minn
 
I had that on my 700. They were more like pops tho. It was running to rich jets were plugged etc. Have you cleaned the carbs/jets? How are the plugs looking
 
Yes my plugs do look a little on the rich side. The previous owner said he just had the dealer clean the carbs, but who really knows for sure. I hate to miss any riding time by taking the carbs off, maybe I'll wait until spring and then clean the carbs myself.
 
you may not get to spring. it could burn down. take an hour to clean the carbs, it's worth not being stranded etc.
 
Better to be safe than sorry, right? Does it really only take a hour to clean the carbs?

Any tips? Can they remain mounted to the rack?
 
oh yeah, they stay in the rack. An hour is a good estimate if you aren't doing it all the time. It pays to take the extra little bit and be thorough. Been there, done that. It's easier to clean carbs than to do one rebuilt, or even a second....
 
dnale said:
oh yeah, they stay in the rack. An hour is a good estimate if you aren't doing it all the time. It pays to take the extra little bit and be thorough. Been there, done that. It's easier to clean carbs than to do one rebuilt, or even a second....
Click to expand...

I do agree here. An hour at least if you aren't familiar with taking them out and cleaning then reinstalling.

I've opened up my fair share of carbs this winter(24...8 sets of 3), and I had a buddy time me once. From the time I started to take them out to the time I put them back in (rejetted, didn't change needles) it was 26-30 mins, I can't remember exactly. I know it was somewhere in there.

Just take your time, look at the pages in the tech section that show how to do it, and you'll do just fine.
 
with the 600 700 triple red heads if you run br9es's it wil burp or pop when letting off run br9eya or br9eix iridiums i bet that will solve yer problem
 
Hey op if you want an easy guide to links just look at my threads on carb cleaning and jets. Most every link in there is explained in detail. Before this winter I never cleaned a set of carbs but after soaking upthe info here on Ty I did everything start to finish in just under an hour and a half. I guess I'm slow. Or just cautious :)

Goin for 45 min next time :)
 
Besides what was already said when you clean the carbs pay special attention to the pilot circuit and the small passages. Do one carb at a time.

Also make sure the exhaust is seated correctly on the pipes and the gaskets are in good shape. I had a tear and crumbling on the surface of my Y-pipe to pipe junction and it used to backfire occasionally.
 
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