possible carb problem

new2zukes · Post by **new2zukes** » Thu Sep 06, 2007 9:47 pm

hi i have a problem my idel speed doesnt stay where i put it tryed mixture and idel adjustment. also when i floor the accelerator there is a 3 second delay b4 anything happens. if any1 could shed some light on what could b happening please say. thanks:)

Smurf · Post by **Smurf** » Thu Sep 06, 2007 9:50 pm

slack throttle cable?

Steve_t647 · Post by **Steve_t647** » Thu Sep 06, 2007 10:01 pm

sounds like timing, also every time you adjust mixture you have to adjust cold idle and hot idle afterwards.

I would get the timing right

good luck

new2zukes · Post by **new2zukes** » Thu Sep 06, 2007 10:25 pm

thanks ye the accelerater cable is a bit slack how would i make it tence again? would a new cable be the way?

Azza · Post by **Azza** » Thu Sep 06, 2007 10:28 pm

new2zukes wrote:hi i have a problem my idel speed doesnt stay where i put it tryed mixture and idel adjustment. also when i floor the accelerator there is a 3 second delay b4 anything happens. if any1 could shed some light on what could b happening please say. thanks:)

It sounds like the timing is a bit out :cry:

Smurf · Post by **Smurf** » Fri Sep 07, 2007 8:04 am

new2zukes wrote:thanks ye the accelerater cable is a bit slack how would i make it tence again? would a new cable be the way?

Follow the cable to the carb, there should be two nuts locking the cable to a metal bracket near the carb, loosen of the nut closest the carb first then wind the other in the same direction until the cable starts to tighten up. Then wind the first nut back up against the bracket to lock everything in place again. It may take a few goes to get it right if you haven't done this before, but its pretty straight forward.

new2zukes · Post by **new2zukes** » Fri Sep 07, 2007 5:55 pm

okay thanks smurf will try it on weekend:)

new2zukes · Post by **new2zukes** » Sun Sep 09, 2007 5:09 pm

still cant get it fixed:( tryed the hot+cold idel and i tightened the accellerater cable. i have a small feeling that the spray of petrol into the carb isnt right but dont no how to fix that i have a haynes workshop manual but nothing seens to work.

Steve_t647 · Post by **Steve_t647** » Sun Sep 09, 2007 5:19 pm

It really sounds like timing, have you tried see where it is timed?

The other thing is check the fuel filter it may need replaceing resticting fuel flow. I would turn the disrtibutor (mark it) 3mm each way from where it is see if it helps (yes its a lot of timing change but saves time)

good luck

new2zukes · Post by **new2zukes** » Thu Sep 13, 2007 8:26 pm

hi how do i work out the timing and what is it, might b a dumb question but im not too up on the machanic side of trucks

DieselBoy · Post by **DieselBoy** » Thu Sep 13, 2007 10:51 pm

You need some special gear to check the timing, either a timing light that works on the HT side or a static timing light that will get it pretty close if you know what your doing. Its a simple job, but you need a timing light really. If it was running fine up untill recently, then it won't be the timing, it doesn't move out all by its self (unless the distributer comes loose :oops:

).

Its more likely something with the carb.

Its possible that your accelerator pump is knackered. Take the air cleaner off so you can see down the barrel of the carb and get ya missus to floor the accelerator pedal while you look down inside the carb, you should see a good strong jet of fuel squirt out into the barrel. If not, its probably time to strip the carb down and clean and rebuild it.

vando · Post by **vando** » Fri Sep 14, 2007 11:18 am

DB is onto it. What part of the country are you from, New2Zukes?

new2zukes · Post by **new2zukes** » Fri Sep 14, 2007 7:04 pm

northland kerikeri oh and thanks for the info i might just do that:) still runs though so il keep it goin for a bit longer.

new2zukes · Post by **new2zukes** » Fri Sep 14, 2007 7:17 pm

is it true a different carb can increase the power in my 1300cc engien? if so what one

DieselBoy · Post by **DieselBoy** » Fri Sep 14, 2007 8:25 pm

new2zukes wrote:is it true a different carb can increase the power in my 1300cc engien? if so what one

Yes it can but it won't be a straight bolt on job more than likely. You will have to find one you can adapt to fit your intake manifold, then tune the carb to make the engine run how you want it with different jet sizes etc etc. If the jets are wrong, you end worse off either to lean and less power, or to rich and it runs like a bag of poooohs.

The basic idea is to get more fuel and air into the combustion chamber and a bigger carb can help a little bit. You can only go so far with that untill there just isn't the vacum to pull anymore in. Thats why they invented turbo's which push more air through the carbs (in the early days before fuel injection :wink:

) getting more fuel and air into the combustion chamber.

Try a high flow air filter to start with??

meatc · Post by **meatc** » Fri Sep 14, 2007 8:31 pm

I had a SU off a mini cooper S on my 1300. dont know i it increased power much as it was on it when i got it. It was a pain in the arse however. standard acclerator cable didnt work and the remote fuel bulb they have had to have a breather drilled into it so it would work on an angle and it always smelt of fuel on bumpy ground.

Have you got a Haynes manuel. PM me if you dont I'm in kaeo and in keri all the time and can loan you one.

sounds like timing to me but hard to say.

possible carb problem

possible carb problem

Re: possible carb problem