COLD DOWNPIPE

[jason1]

Hi all , checking and cleaning the bike today and noticed no3 downpipe on start up takes a lot longer to warm up than the others . Ive checked leads and spark and replaced plugs as a precaution . Still seems the same , has anyone come across this before ? Bike starts on the button and seems to run ok , if slightly down on power.  :eek

[snapper]

might be carbaration?

[Fazerider]

If number 3 chimes in once the throttle's opened up, then it's probably a blocked slow jet.
There are other possibilities though: that carb could be flooding or starved of fuel- fairly easy to test for with a length of plastic tube attached to the drain to check the fuel level.
Of course, if it's not sparks or fuel that are amiss, the other thing is compression.

[Paul]

Agree with fazer-rider


I had a similar problem with a fazer that had been stood for a while.


Check the pilot jets.


It's a fag of a job, but you don't need any special tools to do it.


But before you attempt the 'fag of a job' swap the plugs and spark plug caps round and see if the problem changes cylinder.

[Slaninar]

I've had that problem this whole season.  When the bike is running, the pipes temperature was measured around 140 degrees celsious on all the pipes (+-1 gedree). It sound sweet, runs sweet. Maybe that is just NORMAL for fazers?

I stopped worrying about it. Carbs cleaned, leads checked, spark plugs changed - still the same. But no problems when riding.

[Buzz]

+1


Mine's been that way for the last 18 months, a bit hesitant to start some times, but under load it doesn't miss a beat.  Cleaning the pilot jets has been on the cards for ages but I've just never got round to doing it.  I must get some of darrsi's fave, the "STP fuel system cleaner"!

[BorisTheThird]

Hi all , checking and cleaning the bike today and noticed no3 downpipe on start up takes a lot longer to warm up than the others . Ive checked leads and spark and replaced plugs as a precaution . Still seems the same , has anyone come across this before ? Bike starts on the button and seems to run ok , if slightly down on power.  :eek

i've got this, found that no. 3 pilot screw is seized (not tired to fix it yet)

[jason1]

Cheers all , sounds like a common problem . Done my normal 70 mile commute last night and all seemed fine running . Checked again today and still taking twice as long to heat up on no3 downpipe . Spark is very good , leads trimmed back and in good condition . Drained carb 3 also and plenty of fuel in there. Have added some stp fuel cleaner as a long shot .
If that dont work ill take carbs out , recon , clean, plus need new carb to head rubbers anyway as outer rubbers are on last legs and cracking badly , no leaks as yet but winter will finish them off i reckon .  :'( [size=78%] [/size]

[Lawrence]

I've just checked mine and 1 & 2 were 220C, 3 & 4 were 170C after a 50 mile ride home and idling for a couple of minutes while I found the temp sensor.

It's also running like a bag of shit now  :\  Would be very interested to hear what you did if you get yours sorted.

[darrsi]

+1


Mine's been that way for the last 18 months, a bit hesitant to start some times, but under load it doesn't miss a beat.  Cleaning the pilot jets has been on the cards for ages but I've just never got round to doing it.  I must get some of darrsi's fave, the "STP fuel system cleaner"!

It's got jet fuel in it.......i mean, everybody loves a bit of jet fuel