Major Head Scrathing Going On

[stuart1298 6]

shes over fueling on injectors 2&3 i've been looking at new injectors, and have come up with a problem, my car is running a citroen xm 93 2.0 8v turbo engine, but has a loom from a 406, looking in to it, all the 2.0 turbo 406s i cab find are all 16v. could this be why the cars not running right......

[welshpug 1,657]

there never were any 16v turbo 406's, they were either 16v, OR turbo.

 

best approach is to get yours cleaned, its rare that an injector fails totally.

 

how have you ascertained that its over fuelling on just those two cylinders?

Edited September 26, 2011 by welshpug

[stuart1298 6]

one of my mechanics had a look, said its over fueling on 2 & 3 he done a compression test, and looking at the plugs said it was over fueling, looking up a lambda sensor for xm it has 2 2pin plugs, one for the 406 has 1 4pin plug, could this be a reason?

 

really starting to get the hump with this car now, i've put so much time, effort, blood, sweat and tears(usually the wifes cos i wanna get the car sorted) and just keep hitting problems.

 

just want it running properly

 

Going to invest in some denso iridium plugs, see if that helps aswell

[welshpug 1,657]

The Lambda sensor works exactly the same way, just a different plug/s

 

expensive spark plugs will not make one bit of difference unless its a highly tuned race engine, standard NGK's will do the job just fine, often just a different grade of standard plugs suffice.

[stuart1298 6]

Thats what i thought with the plugs, but there only £25 though work, so didnt no if it was worth a shot, gonna swap the injector leads over tonight and see if that makes and difference, least i will no if its the injectors or the ecu playing up

[jonnyturbo 3]

im having same problem with my engine running like its a tooth out although it isnt. iv changed everything for new apart from the ecu and tps but i have tried a different ecu and tps i had spare and its the same outcome.

[stuart1298 6]

i'd give up if i hadnt spent so much time and money on the poxy thing

[welshpug 1,657]

standard NGK's are well under a tenner usually

[stuart1298 6]

do you think its worth putting better quality plugs in, or leave as they are?

[Miles 331 1 Cars]

Std plugs are fine, I only tend you use colder ones on anything over 220bhp, But swapping a plug for plug I doubt you would notice any difference unless really old

[stuart1298 6]

There new plugs, any idea what number they are, I work at ECP and to be honest even I don't trust our systems lol

[Henry Yorke 269 3 Cars]

...... looking up a lambda sensor for xm it has 2 2pin plugs, one for the 406 has 1 4pin plug, could this be a reason?

The Lambda sensor works exactly the same way, just a different plug/s

 

Are the 4 wire ones not pre heated and therefore different to the 2 pin ones?

[welshpug 1,657]

Are the 4 wire ones not pre heated and therefore different to the 2 pin ones?

 

both are 4 wire...

[stuart1298 6]

Both 4 wire one had a 4 pin plug, 1 has 2x2pin plugs

[Daviewonder 533 3 Cars]

I believe sonofsam ran his 406 turbo engine with an XM loom without any problems.

[stuart1298 6]

Does he fancy a night in sunny Romford? Lol, cara doing my head in. Didn't get a chance to play with it tonight as it was hammering it down, fingers crossed some joy tomorrow

[stuart1298 6]

Am I right in thinking there is no order in the firing of injectors that they all fire at the same time?

Edited September 26, 2011 by stuart1298

[Daviewonder 533 3 Cars]

Did you try swapping the injectors over like I suggested in the other thread?

[stuart1298 6]

Doing that as soon as I get some half decent weather

 

Doing that as soon as I get some half decent weather