hello all
i have recently got a westfield megablade and have got some running problems with it.
When i first got it it run was quick but wasnt running at its best,on my third trip out in it i had gone about 3miles and it started to slow and drive like it was running 2/3 cyl and then stopped all together,when it cooled down it started but didnt run well,after changing coils,plugs,leads,and having the carbs cleaned tuned and balanced it runs fine in the drive way,went out to test it got about 1 mile and had very little power and then did same thing and stopped and this time didnt want to start again and still wont start even when cold,does anyone have any ideas what it mite be any help would be great thanks

I dont know if ones fitted but had very similar experience with my zzr, turnt out it was fuel pump relay.

Have you checked the fuel is coming through? if using the standard blade pump the points get corroded and the pump doesnt work properly. Check fuel first and let us know, then we can suggest other routes

has it ever run correctly?
Fuel pump/filter?
Test by removing pipe at the carbs, should fill a milkbottle quickly.

What air filter are you running?
is it jetted to suit?
Do you have a choke set up on it to start from cold?

My starters for 10

thanks for the responce guys
right its a 893 carbs,westfield sausage filter,i just took the the fuel line off from after the regulator turned on pump and it just dribbles out,then did it b4 regulator and it comes out much quicker is this normal,could it be the regulator is not set right,what sort off fuel presure should i have to feed the carbs,i have a gauge so could check this cheers tim

Sounds like fuel issue to me aswell, might be worth putting your location on your profile, someone local to you might pop round to hve a look at with you.

[Edited on 19/05/04 by PAUL FISHER]

So you are using a fuel pump and a seperate pressuer regulator?

Whilst some have this set up and get it working, most find that a suitable bike pump with it's own built in regulation is most effective /reliable .

PS the dribbling does not sound good and suspect that is not enought for real driving

Although my money is on fuel too, I had a similar problem in a tin top. Turned out to be the coils breaking down.

Also had a Maico that would tick over and rev the the moon at standstill, but would splutter when ridden.

Found the cut off switch wire earthing against the forks, the wind was blowing it back!

Are you using the standard bike pump, I.e. Round cyclinfer thing with a black end cap? If so these are self regulating. The dribble doesnt sound good!

what fuel pressure should i run at the carbs

quote:

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Originally posted by firebladetim
what fuel pressure should i run at the carbs

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quote:

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Originally posted by firebladetim
what fuel pressure should i run at the carbs

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You don't need much pressure, a few psi is enough, does need to deliver ~1 liter/min to carbs though.

I would be checking the coil HT leads/connections even if they have been replaced, they have a habit of breaking down and creating bad connections. Also check plugs to see if its been over fueling and fowled them up.

cheers guys thanks for your help

iv been reading about reg/rec getting hot on fireblades,mine does too so will move it and put a fan on, but would this be the problem as it seems to run worse when it gets hot,some one i spoke to seems to think it wouldnt effect the running of the engine but have seen other post that say it mite,any ideas cheers

If the rectifier pops then you stop charging the battery, if this happens when you are driving then you will develop a misfire as the battery goes flat due to the battery not having enough juice to create a good spark.

I'd be pretty confident that you identified the problem when you found that fuel "dribbled" out of the regulator.

Cheers
Davie

think your right davie,will give the bike pump thing a go cheers