Hey guys, I need to lean on you once again. I have a 03 Bigdog Bulldog that had some trouble running last year after it heated up. We got through that but now the bike is popping like crazy after releasing the trottle. As well as the popping while driving, I get a tremendous gun shot pop at times when I start the engine. Can you guys give me some ideas as to what it may be?
03 Bulldog Popping like crazy
- Thread starter Rich9426
- Start date
bigdogtech01
Well-Known Member
How did you fix the other problem you were having? New ignition?
You might have an intake leak right now...have you checked intake seals for leakage?
Also, the rubber plugs on the top of the carb can dry rot and cause an intake leak.
Fuel/air screw in carb can also cause this if someone has played with the adjustment, and/or the needle itself is worn out.
If non of the above, you might have a problem with the ignition system itself.
You might have an intake leak right now...have you checked intake seals for leakage?
Also, the rubber plugs on the top of the carb can dry rot and cause an intake leak.
Fuel/air screw in carb can also cause this if someone has played with the adjustment, and/or the needle itself is worn out.
If non of the above, you might have a problem with the ignition system itself.
bigdogtech01
Well-Known Member
Yes, if they are plugged with no vacuum hose going to them, you want to make sure the rubber plug is good. You can pick up a pack of them at most any auto parts store..1/8" in size works good, then put small zip tie around them for security.
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bigdogtech01
Well-Known Member
That's most likely your problem...PLUG THEM UP!! 
O
okie_dog
Guest
check and make sure you exhaust bolts are tight, mine were slightly loose where they bolt to the cylinders and it would pop and backfire constantly.
