Cuts out when hot
Cuts out when hot
Recently my bike gas started to run like crap when it gets hot. Cuts out and is hard to start again.
Also there's a bit of a whine from the engine which rises and falls with the revs. (Not a great explanation) I know
Any ideas where to start looking
Also there's a bit of a whine from the engine which rises and falls with the revs. (Not a great explanation) I know
Any ideas where to start looking
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
Re: Cuts out when hot
Check your petcock diaphragm...Tiny litle pin hole or a rip at the edge can have simular effect...Easy to do...Vanstub has simular issues...changed coils, ecu ect...lots of stripping & swapping of parts to no effect...The diaphragm had a rip in along the edge...Fitted a new one problem solved.hallie wrote:Recently my bike gas started to run like crap when it gets hot. Cuts out and is hard to start again.
Also there's a bit of a whine from the engine which rises and falls with the revs. (Not a great explanation) I know
Any ideas where to start looking
Making up since 2007, sometimes it's true...Honest...
Re: Cuts out when hot
Is the bike perfectly ok when it is cold?
Does the bike misfire at all or just cuts out when left to idle and is hard to start?
Sounds like over fuelling with the very limited information given, possible choke issue/sticking?
Try to give us more to work with like exactly what your feeling when it runs like crap is its bogging down, misfiring, lacking power etc.
Are you able to do any basic fault finding tasks to help us find the solution? Stuff like checking plugs, coil voltages and resistance checks?
Cheers,
Bill.
Does the bike misfire at all or just cuts out when left to idle and is hard to start?
Sounds like over fuelling with the very limited information given, possible choke issue/sticking?
Try to give us more to work with like exactly what your feeling when it runs like crap is its bogging down, misfiring, lacking power etc.
Are you able to do any basic fault finding tasks to help us find the solution? Stuff like checking plugs, coil voltages and resistance checks?
Cheers,
Bill.
Re: Cuts out when hot
Starts and runs fine when cold. Problems only occur when it's hot (temp gauge around half way mark). Plugs coils all ok. Mac may hit the nail. As when it's hot it's like it's being starved fuel.... splutters alot and dies. Then it's trying hard to turn over to get it started againmoto1818 wrote:Is the bike perfectly ok when it is cold?
Does the bike misfire at all or just cuts out when left to idle and is hard to start?
Sounds like over fuelling with the very limited information given, possible choke issue/sticking?
Try to give us more to work with like exactly what your feeling when it runs like crap is its bogging down, misfiring, lacking power etc.
Are you able to do any basic fault finding tasks to help us find the solution? Stuff like checking plugs, coil voltages and resistance checks?
Cheers,
Bill.
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
Re: Cuts out when hot
I don't see the temperature having any bearing on the fuel diaphragm, it should be the same hot or cold if that was the problem??
It's a very simple check in any case to see if that's the issue. I would also be looking at an air leak on the inlet side of things, possible carb rubbers, that could give warm running issues, hope you find it!!
It's a very simple check in any case to see if that's the issue. I would also be looking at an air leak on the inlet side of things, possible carb rubbers, that could give warm running issues, hope you find it!!
Re: Cuts out when hot
At higher speds, revs, load...The Vacuum is pulling harder which stretches the diaphragm more...moto1818 wrote:I don't see the temperature having any bearing on the fuel diaphragm, it should be the same hot or cold if that was the problem??
It's a very simple check in any case to see if that's the issue. I would also be looking at an air leak on the inlet side of things, possible carb rubbers, that could give warm running issues, hope you find it!!
Vanstubs bike was doing excatly that...fine starting from cold & running but a M/way speeds it was cutting out...
Making up since 2007, sometimes it's true...Honest...
Re: Cuts out when hot
OK, I now see a possible link! I guess the test would be to let it idle until hot and see if it still does it?
These types of problems can be a beggar to find but ace when you get it!!
These types of problems can be a beggar to find but ace when you get it!!
MacV2 wrote:At higher speds, revs, load...The Vacuum is pulling harder which stretches the diaphragm more...moto1818 wrote:I don't see the temperature having any bearing on the fuel diaphragm, it should be the same hot or cold if that was the problem??
It's a very simple check in any case to see if that's the issue. I would also be looking at an air leak on the inlet side of things, possible carb rubbers, that could give warm running issues, hope you find it!!
Vanstubs bike was doing excatly that...fine starting from cold & running but a M/way speeds it was cutting out...
Re: Cuts out when hot
Cheers Mac. Will check that when I get back to the bike. Away with the annoying people (family) for the long weekend
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
Re: Cuts out when hot
Petcock stripped and checked and all seems ok so none the wiser now
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
Re: Cuts out when hot
Had you changed to manuals?
Could be they're too tight.
I'm thinking about the whining noise you mentioned.
Peacock won't make a noise anyway.
Could be they're too tight.
I'm thinking about the whining noise you mentioned.
Peacock won't make a noise anyway.
It's not falling off, it's an upgrade opportunity.
Re: Cuts out when hot
Have stopper mod done
Clearence were done 5k ago
Clearence were done 5k ago
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
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Re: Cuts out when hot
Get the bike hot and then turn it off, attach a dmm to the battery and start it, see what the drop is, a battery on its way out will show same symptoms. Also check what the charging is when running.
If it aint broke, get your bloody hands off it!
Re: Cuts out when hot
12.3 not running drops to 10.8 on start up and when running its reading 13.5v. Seems about right to me.VTR Phoenix wrote:Get the bike hot and then turn it off, attach a dmm to the battery and start it, see what the drop is, a battery on its way out will show same symptoms. Also check what the charging is when running.
Thinking valve clearence next?????
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/
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- Location: Slough, Berkshire
Re: Cuts out when hot
YeahVTR Phoenix wrote:Is that when the bike is hot?
TIP; Never take a sleeping pill and laxative on the same night
http://morrisonbhp.net/
http://morrisonbhp.net/