Date: Wed, 25 Sep 2002 09:38:14 +0100 From: Davey <NOSPAM_nosignolifenopsamorld.com> Subject: Re: Checkin SAAB 9000 fuel injectors
Stephen Hiya, hmmmmm (rubs chin......) Have you thought of taking the injectors to a workshop for cleaning up (they get laquer on them and get "sticky" .....hence the "quiet" 2-3 injectors.... ;-) ) If they are clicking then they are alive, but (and its a big but) if they are laquered then they will not Spray, they will dribble, and Dribbles aint no good basically. You need a nice "Purfume Spray" not a squirt. You can check if you have a nice spray as suggested by one of the other guys (do pay attention to his warnings on atomised fuel dangers though, he is dead right. One thing I note from your Update....... If your Number three plug is "wet" erm.........its NOT firing ....... The other plugs are sooty because the system is trying to compensate for the rough running etc, and increasing the fuel/air mix accordingly ( going Rich, Quite normal for the time being). The fact that number three is wet and not sooty is a further indication that it is Not firing by the way....... I stick to me orginal plan here Stephen, Get that Ignition system checked, it sounds as if number three isn't getting any sparks, although you may well have laquered up injectors as well which will be adding to the problem. If you want to Mail me direct , remove NOSPAM from the email addy and get back to me. Take Care Davey Steven Jack wrote: > Hi yep compression was checked by mechanic and all were okay (don't know > the reading). His prognosis was a brocken oil control ring on clylnder 3. I > tool the car back and essentially prepared to scrap it, but was hesitant as > I had spent a fair ammount on its MOT. > The good people on this group suggested it was probably a fuel injection > fault and I am know pretty sure they are right. So new injectors are on > order from the breakers and fingers crossed that does the trick. > > Steven > > "meme meme" <splitscreen69nopsamsnet.com.au> wrote in message > news:3d8f00bf$0$23171$afc38c87nopsam.optusnet.com.au... > >>Have you checked compression. >> >>"Steven Jack" <mailnopsamaurs.fsworld.co.uk> wrote in message >>news:amk9lg$f5k$1nopsamg1.svr.pol.co.uk... >> >>>Thanks to all the replied before. >>>The engine runs roughly and idles poorly. Removing number 3 lead from >> > the > >>>plug has no effect all the rest do, though number 2 has less efect than >> > 1 > >>>and 4. >>>I swapped the plugs and leads around - noeffect. Num 3 plug is clean the >>>others are all black soot. Number 2 is slightly wet. >>>Running the engine I can remove injector leads for 2 or 3 with no >> > effect, > >>I >> >>>am confused as 2 seems to be burning something to turn the plug black. >> > If > >>I >> >>>unplug 1 or 4 the engine dies. Listening to the injectors with the >>>screwdriver trick gives a very loud tick on 1 & 4 and much quiter on 2 & >> >>3. >> >>>Swapping injectors moves the ticking sound but doesn't change the fault >>>condition i.e. still no effect on idle removing num 3 lead. >>>According to the manual all injectors fire together, so can I safely >> > swap > >>>the cables between injectors ? >>>Is there any way to test them on the bench, i.e. by supplying a voltage >> > to > >>>them and blowing through them ? >>> >>>Thanks >>>Steven Jack >>>s.jacknopsam.net >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> > >
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