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04 Cali hot start issue

S

Scottcc

Tuned and Synch'ed
Joined
Jun 5, 2012
Messages
31
Location
Martinsburg, WV
After I shut my bike down for about 30 minutes it doesn't like to idle. It will start and run a few seconds then the rpms falls until it quits running. When it is acting up I can ride for very little then it will idle properly and when it's a cold start no issues.

I was running 89 mid grade fuel and now using 93 premium with no difference. I hope it is no cause for damage but I would like to know what's going on so I can fix it. Thanks.
 
If you have access to VDSTS or similar see if your sensors and TPS are in range. Can't really make a diagnosis without some basic information.
 
I know a guy at the shop I bought the from, I'll try to talk to him. I've been riding a good bit today and every time I get back on after a stop it acts up. When it putts out, it smells strong with fumes. I think it has something to do with the cold idle circuit.
 
Excuse a comment from a guy that's probably clueless, but could this be a tank venting issue? To test, loosen the cap before you try to start it when its hot.
 
pokeyjoe said:
Excuse a comment from a guy that's probably clueless, but could this be a tank venting issue? To test, loosen the cap before you try to start it when its hot.
Click to expand...

That seemed to help this time. I'll retry in a hour and see if acts up then open the cap.

I have notice a mild miss at idle, I can put my hand close to exhaust and the left side is cooler and lot less air. However the valve covers seem about the same tempature.
 
Scottcc said:
I think it has something to do with the cold idle circuit.
Click to expand...

There is no cold idle circuit. All fueling is controlled by the ECU based on information it receives from the sensors.

Based on your results with the fuel cap, there is a anti spill valve in the external vent line near the front of the tank . If you haven't removed it, remove it and throw it away. That will eliminate one possible culprit if it hasn't already been removed.
 
john zibell said:
Scottcc said:
I think it has something to do with the cold idle circuit.
Click to expand...

There is no cold idle circuit. All fueling is controlled by the ECU based on information it receives from the sensors.

Based on your results with the fuel cap, there is a anti spill valve in the external vent line near the front of the tank . If you haven't removed it, remove it and throw it away. That will eliminate one possible culprit if it hasn't already been removed.
Click to expand...


I'll do that thanks. I tried it again without it acting up and didn't pull the cap, but it is cooler out now with the Sun going down. Thanks for the advise so far.
 
I think it is hot weather related. Today was much cooler than the day it was acting up, it was a little glitchy but nearly as bad. I will try removing the external vent line soon as suggested.
 
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