Backfiring from front cylinder and plug fouling

[jeffwest5599]

Having some real issues with the 2001 pitbull. It is backfiring out of the front cylinder between shifts when getting on it. Will not do it when I quick shift it. It only does it out the front cylinder and will also backfire through the carb. Additionally, it keeps fouling plugs, I believe, after a few days. It will start to surge and then just die. I will try to start and it will just turn over and not want to start. It can sit for a little bit and then start but will surge unless plugs are changed. Plugs are not black. It has a new coil and wires so any thoughts would help. This us frustrating and just hoping you guys had any ideas before I take it to the shop. The carb on the bike was also adjusted properly. Please let me know any suggestions.

Jeff

 

[jeffwest5599]

Backfire

Additionally, I still cannot get the signals and rear brake lights to work. I checked all wires and even pulled wires from the handlebars to make sure there were no kinks. I can get them to light up is I run a jumper from the battery to the inlet of the plug when it is off the harness. I am assuming it us the ehc. I bought a used one off eBay in hopes this would help. I talked to wire plus and they do not make one for this year and there are no alternatives. If the new ehc does not work, I am just going to hard wire them direct.

Jeff

 

[BadBrad]

Jeff,
It kinda sounds like you may have a leak on your intake. You may also want to do a compression check just to make sure it's not something internal, like rings or valves/guides. You said it's fouling plugs but they are not black. So, what do you mean by fouling? Maybe a pic of the plugs would help.

 

[jeffwest5599]

Backfire

Originally I did see a black plug with a lot of carbon on it. However, lately they are not black and don't have the deposits. However, I can put new plugs in for a while and then it does again so I assume the plugs are fouling.

Jeff

 

[RRRUFF]

Jeff,
It kinda sounds like you may have a leak on your intake. You may also want to do a compression check just to make sure it's not something internal, like rings or valves/guides. You said it's fouling plugs but they are not black. So, what do you mean by fouling? Maybe a pic of the plugs would help.

Same here!:up: