Thumper1
New member
buddy is saying his viper with 7500? miles on it is hard to start when it is warm. cold, no problem. hot, no problem (still has to crack the throttle 1/8 or so like everyone else). it is when he stops for 1/2 to 1 hour and the sled doesn't want to start again. lots of choke, 1/2 choke, no choke, you name it, same stuff which involves a lot of pulling. i was thinking maybe the reeds are starting to curl which might be a factor. (and getting electric start!)
any thoughts?
any thoughts?
Thumper1 said:
Has he tried going WOT while cranking? I only ask because my XCR would do this and it was a sign that the needle and seats were leaking on one or more of the carbs. There was a bulletin from Polaris and changing all three fixed it. Going WOT while tugging helped to get it lit if it sat for an hour or so.
Or maybe a partially plugged vent line that might be allowing pressure build up in one or more of the bowls during a hot soak. Underhood temps will rise before dropping creating a pressure rise in the fuel line/bowls if not vented perhaps pushing fuel up the jet main.
If going WOT helps it's a good indicator that fuel leakage is the problem.
Just a thought.