hey guys i just put extractors on my 4k motor and it is not running right

in high revs its great but down low its shit house

of course there are some hoses that don't connect buck up to anything when you put extractors on

but what hoses do need to be connected still and which ones can i get rid off

 

just want to make it run right

 

thanks guys its working now

:D :fuzz:

Edited June 8, 200917 yr by KE70PWR

could need a tune up, has a vacuum leak, or both

get a mist squirter and spray a little water around inlet/exhaust manifold to check for leak while its running. revs die = leak

did you check the inlet and extractors with a straight edge before putting them back? there was a thread about the flange of the extractors being slightly bigger than inlet flange a few days ago

just a few ideas

 

you need the distributer vac advance & charcoal canister line, check out the vacuum diagrams in the faq

 

http://www.rollaclub.com/faq/index.php?tit..._System_Diagram

ok no leak in manifold but still can't get it to run right

low revs under load its shit but high revs its cool

tried adjusting the fuel mixture made it a bit better but still doing it

when its cold runs good at low revs lol any help

What have you done with all the factory EGR gear? I reakon you've got a vaccum leak somewhere there. Did winding the mixture screw all the way out help? I'd say you've got a manifold leak of some sort.

i sprayed so much water on it its not funny and didnt react at all so no manifold leak yeah moving the mixture screw helped but didnt fix.

if i pull the choke on when i take off its fine then push it in when it gets above about 2000 rpm lol

think its all fixed now

What did you do??

 

It was obviously leaning out low down...

ahhhh just drove it again and its still doing it ahhhhhhhhhhhhhh

f@$k

ok if i wind the mixture screw all the way in until it nearly stalls it runs better at the low revs but it still chuggs until the revs get up a little like 2000

can't find a vacum leak or gasket leak

Stock carb?? What vac hoses are hooked up and to where??

 

There aren't any hoses hooked to the exhaust manifold, so nothing on the inlet should have changed...

 

How are the thicknesses of the manifold flanges?? Same, or are the inlet flanges thinner where the bolts go on?

Edited June 2, 200917 yr by altezzaclub

stock carb

all hoses still hooked up apart from the hoses that were connected to the old exhaust manifold

flanges are the same i think the washers are sitting flat and no leaks sprayed water around them and nothing changes

OK, the only hoses on my exhaust are to do with the EGR valve thing, so I suppose all that has vanished on yours.

 

Have you blocked the hoses that used to work the valve? They will let air into the carb...

\yeah but i just found a hose that went to the front of the manifold like a black plug that screws in and has 2 hoses coming out of it one of them has broken off is that a hose to do with emmission control or something else i blocked it off and it did not help

\yeah but i just found a hose that went to the front of the manifold like a black plug that screws in and has 2 hoses coming out of it one of them has broken off is that a hose to do with emmission control or something else i blocked it off and it did not help

 

 

G`day mate, I had an incidence years ago where I inadvertantly over tightened the bolt that holds your air cleaner on. That tends to slightly warp the top half of your carby and it runs like puss. Worth a try.

thanks but deos the same with no filter on there and cover off