Triumphrat

simon cook

Hi, hope you can help i have a year 2000 955i that starts on two cylnders and runs like a pile of c*@p until 5000 rpm, when the third cylnder kicks in and it pulls like mad!
I have tryed new plugs, swapping the coils to see if the problem moves to another cylnder, tested the wiring between the coils and the ecu and came up with a big fat nothing!!!
if anyone has had a similar problem or may have any ideas they would be greatfully recived!!!
PS. it pops and farts when you are off the throttle too!
Thanks!!

bradtx

simon cook, Next start-up and if there's no MIL illuminated, use a wet sponge to see which cylinder isn't firing by determining which primary pipe isn't hot. Check that that cylinder's plug sparks and injector nozzle sprays.

When it's running, if the MIL is illuminated an inexpensive OBDII reader can read the code. If there is one, let us know what it is.

Brad

simon cook

thanks for your reply, i have tested for a spark and all is ok, there is no MIL light on. i have tesed the downpipes with a laser temp reader and it only happens to no 3 cylnder!
i will buy a OBD2 and see how i get on!!

kriss

im old and was once told in an engine dont start think of the 3 p,s , plugs , points and petrol. now as you dont have point s you have 2 options, you say your plugs are firing so petrol, injector nozzle or weak injector. if you know which cylinder is not firing up on startup take plug out of that cylinder and if you have a syringe squirt small ammount of fuel into plug hole and reinstall plug if it then fires up you know its fuel. im a newbie on here but had all sorts of bikes for over 40 years and just bought my first triumph,. i had a triumph tr6 (car) when i was 21 and had same prob as you and it would only fire on 5 cylinders and after weeks of messing around found it was tiny piece of crap blocking injector nozzle, good luck mate.

simon cook

thanks will give it a try!

kriss

hi simon, how i found mine was when engine was ticking over i just pulled on end of injector nozzle and it must of cleared it as fuel started spraying then and nevr had prob again but try the small amount of fuel directly down plughole as thats an easy tester, good luck am sure thats your prob.

DEcosse

Welcome to you both!
It's a good idea to put your year/model and location in your profiles - those will help as ready identifiers going forward, appearing in the left margin under your screen name.


Good suggestion when you have a common manifold from a single Throttle Body - however on the Triumph youhave individual TB's for each cylinder
So it's lot easier to just drizzle some - or spray - starter fluid straight into the TB's - you can test all three (independently) easily when it's running like this. Narrowing it down as Brad suggested is a good idea though

If not a plug or coil, then the injector is certainly a good candidate.
If you positively identify the issue as fuel, try a product called Seafoam and see if that helps any.
Again drizzling it directly into the TB's is good for cleaning the combustion chamber, but won't do anything for the injectors, which will need to be through the gas.
Ultimately you can remove the injectors and have them professionally cleaned/flow tested. Much more cost effective than replacing!
A couple of good ones are WitchHunter and Injector-Rehab - RC Engineering is also good but considerably more expensive

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T'Rat.net BOTM November 2009

simon cook

Thank you all for your help!!!
Synchronized the throttle bodies and problem solved!!
cant believe it makes such a difference, from the noises it was making i thought it was a scrapper.

pumpman

Amazing stuff, good to see it has other fans here...it is magic for engines, especially if they have been sitting unused for a while.