Hi all....

I have a strange problem...3weeks ago ive put some new 071 plugs in the engine...so far no problem...
But yesterday...the car was running on 3cyl again when at idle...but when im driving it runs on 4cyl....
But if i bring the boost up above 0.5bar or so...it misfires...(i think the cylinder its about i guess)...
But otherwise it runs ok...only at idle on 3...

Does anyone have an idea...

 

Allright...little update...

its the first cylinder which doesnt work at idle...
ive changed the leads with each other....no result..
ive changed the plugs woth each other...also no result..
ive newed the the plastic things on the distributor...where the leads hanging on..dont know the word...also no result...

mmm...

could this be an injector problem...i find it strange because it only wont work at idle...

there is no messy stuff in the coolant..and also not on the oilstick...
the car runs normal when driving...but positive boost at 0.5bar and more it misfires..i guess at the first cyl...

 

Just check the condition of the crank pully, especially the 4 lugs around the outside !

Also check condition of injector plugs, maybe swap the injectors round ?

It's something indiginous to that cylinder.

Are you sure that it's not sparking on idle, or no fuel ?

Good luck

Jb

 

thanks for the reaction JB....tommorow i gonna go for the cyl pressure test..then i will find out if its something mechanical..

im not sure if the its not sparking on idle or no fuel...

 

Thats alright fella,

Well if you take the plug out on the cylinder thats causin greif, smell it or does it look wet ? If no spark & the injectors workin fine it'll be wet, but don't rev it to make that cylinder work again as your'd burn it all off !

Have you got a noid light to check the injector's pulsing ?

Yeah do a compression test, then if thats fines it's just a case of process of elimination. can only be one of a few things !

Sticky lifter for instance !

Good luck,

If you get stuck i'll give ya me mobile number & we can go through things over the phone.

Cheers

Jb

 

Hi JB..

All the plugs are dry...to make it all more complicated...hehehe

But im curious what the comp test will do...hope its all ok with the mechanical part...tbh

Are you sure you wanna call....you've noticed where i live..

 

LOL,

So could be injector not firing ?

I didn't realise where you live !

But i did say i will give you my number so you can call me ! ! !

Already got Ł250 phone bill each month ! LOL

Cheers

jb

P.s. remember when you do the compression test, your looking for consistency across all 4 cylinders not specifically figures ! And try do it when engine at operating temp & with full throttle (disconnect coil or dizzy so engine doesn't fire). Good luck again

 

250 pounds...hehe..my wife would kill me if i did...

but the engine will be warm when i get to the guy who gonna help me...its about 45miles driving..

but thanks for the tips anyway...your the only one so far..

maybe because my name is not Stu, Mike or Martin etc..

 

ok...little update again...

compressiontest was ok....only cyl 3 is 6% behind on the rest....for the milage not bad i guess...

it turns out its the gasket between the inlet and the head...its leaking at the first cylinder...

so i know what the problem is now...

 

use a cometic inlet the ford ones are shit...

 

Had the same problem on a mates car but it was that bad it was idleing at 1400 rpm

 

i think not...its been there for the last 7years and 120K km's...so not bad i guess...

and i have a new one here...

 

same as mine...but at 1600rpm..

im glad the engine is resonable healty