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warm weather starting

D

dloftus

Tuned and Synch'ed
Joined
Dec 2, 2008
Messages
69
The weather around Philly has recently warmed up 85F+ and I noticed when I first start the bike it won't idle without me manually using the throttle for about a minute to keep the RPMs up. After that everything is fine. I kind of expect this type of thing in the cold weather if the stepper motor wasn't working right but that wasn't the case at all. Any thoughts? I have an '07 Griso.

Dan
 
You might see the other post, when my griso sits in the sun, it warms up the bits by the temp sensor, so the ECU thinks the bike is already warmed up, but the internal bits are still cold and the fuel atomization is not happening quite as effectively as it will when the rest of the bits get warmed up. If it sits in the sun, this is standard issue, park it in the shade and see if its cured... happened on my griso and my cal ss, same problem, er, um, I mean feature.....
 
Sounds reasonable. The only thing I would note is that this was definitely not happening last summer.
 
On mine, it is actually the location I park it and the angle the sun has on the bits... Park it one direction, no problem, parking facing the other way, problem..... I would rule this out first. also, have you checked the TPS and balance and the usual stuff? also, a tight valve can cause idle issues, are your tappets in order
 
hmmm mine does the exact same thing. taking it to the shop on friday. I'll post what they find and changes they make. I also did not have the problem last summer. I believe they are planning on doing a throttle body balance and tps reset.
 
Yeah, let me know how you make out. I'd probably have to do it myself as my dealer is useless.
 
well took it to the dealer with reported symptoms. They believed it was the valves and throttle body. I'm not buying it but we'll see. I just have to wait for warmer weather to test, cold front moved in.

strange bit is i told them i did the valves about 3k miles ago and they insisted they re-do em. I was hesitant as they charge $98 an hour. I gave in and let them redo em. they said they found the valves to be at .279mm on three valves and .280 on one exhuast valve, rather than .15 and .10.

is it possible for the valves to get that out of wack that quickly? when i did the valves myself I spent a good deal of time ensuring they were correct. I think I am going to pull the tops off and re-measure to see if I was somehow measuring at the an incorrect rotation. although I dont see how..

the one thing I may do is get the brass sensor talked about in this forum. that probably holds more weight as an explanation for me. However, I am finding a little bit of a hard time finding it...is this the correct part? http://www.mgcycle.com/product_info.php ... ts_id=1114


thanks,


zedo
 
I don't know about that valve measurement... They would be pretty good to tell you that some were .279 and one was .280... One thing is that is really loose and I think you would have heard a lot of valve clatter - and the ability to accurately measure .001mm seams fishy.
 
zedo wrote:
the one thing I may do is get the brass sensor talked about in this forum. that probably holds more weight as an explanation for me. However, I am finding a little bit of a hard time finding it...is this the correct part? http://www.mgcycle.com/product_info.php ... ts_id=1114


thanks,


zedo
Click to expand...

Zedo,

That is a sensor. I believe what many talk about is a brass holder for the sensor. What is more important is that you use thermal mastic between the sensor and the holder.
 
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