Guest BrainFluid Posted January 18, 2007 (edited) Grrr. Plonked the old girl back together again today but she wont start. Well, she will, but only with the pedal to the floor. When I start to bring my foot off the pedal she *backfires* then she will run very lumpy at around 1500 with my foot far too far on the pedal. Continuing to backfire. Fuel is spraying through each injector. So i dont think its fuel related. Me thinks it must be spark related (maybe air?).....Haynes says not to check there is a spark by holding the spark plug against the block, is this a load of old haggis? Its the only thing that has stopped me from checking like this. When I pulled the HT leads of the spark plugs. One of them smelt different to the rest, kind of wetter, whereas the other 3 kinda smelt dry. Would that mean that 1 or 3 plugs are sparking? Its a real pisser because when you just turn the key with no pedal pressing you can hear the old girl want to burst into action straight away but then realises shes tucked her skirt into her knickers, blushes and just stops dead. I checked the spark plug gaps and cleaned them etc yesterday. Hmm, should a ngk spark plug be 8mm gap like the haynes maual says, thinking about it now haynes is on about champion plus. Any help well apreciated... *waves spanners in the air and curses the sky gods* EDIT: She will not idle at all btw. Edited January 18, 2007 by BrainFluid Share this post Link to post Share on other sites
tom_m 0 Posted January 18, 2007 umm might be a stupid question, but you have got the firing order right haven't you? Share this post Link to post Share on other sites
welshpug 1,657 Posted January 18, 2007 sounds like you've left the AFM or engine temp sensor unplugged... Share this post Link to post Share on other sites
Guest mick925 Posted January 18, 2007 I always check them like this, just rest the plug on an earth whilst in the ht lead and spin her over is the dizzy cap ok Share this post Link to post Share on other sites
boldy205 75 Posted January 18, 2007 engine temp sensor off will lead to thin kind of situation, as it thinks its v cold so floods the engine big time. plug gap is arround 0.7mm (i presume you did mean 0.8 not 8mm!! ) Share this post Link to post Share on other sites
Guest BrainFluid Posted January 18, 2007 (edited) umm might be a stupid question, but you have got the firing order right haven't you? The HT leads? Yup they are correct order. Even the Injector plugs are the same order as they were, not that it matters right? sounds like you've left the AFM or engine temp sensor unplugged... AFM is plugged in, engine temp sensor plugged in. (I will double check the engine temp sensor tommorow tho') I always check them like this, just rest the plug on an earth whilst in the ht lead and spin her over is the dizzy cap ok Is it safe for the coil etc to do that? Haynes seems to say nope bad for your ignition equipment, but we all know what haynes is like... What do you make of one of the HT plugs smelling wet, unlike the others smelling dry? Would y'all say this is spark or air related? Ta much so far. EDIT: *waves a screwdriver in the air this time, damn you car god, damn you!* DOUBLE EDIT: Hey Boldy! yeah I meant 0.8m lol. 7 you say? Is that better than haynes 8? Edited January 18, 2007 by BrainFluid Share this post Link to post Share on other sites
welshpug 1,657 Posted January 18, 2007 If you've used NGK plug you will not need to alter the gap at all, they're not designed to be altered and are factory set to 0.8mm. Share this post Link to post Share on other sites
welshpug 1,657 Posted January 18, 2007 how old are the plugs and leads? Share this post Link to post Share on other sites
Guest mick925 Posted January 18, 2007 i`ve done it that was since the first days of serving my time as an apprentice mechanic 6 years ago and never known it cause a problem, i might just be lucky Share this post Link to post Share on other sites
Guest BrainFluid Posted January 18, 2007 If you've used NGK plug you will not need to alter the gap at all, they're not designed to be altered and are factory set to 0.8mm. Oh...A couple of them were a wee bit bigger than 0.8 so I tapped them down a bit... how old are the plugs and leads? No Idea mate, but like you know what its like it worked before I took it all apart... i`ve done it that was since the first days of serving my time as an apprentice mechanic 6 years ago and never known it cause a problem, i might just be lucky Okay I trusts ya man -------------------------------------- If the engine temp sensor was unplugged, would it not start from cold really easily? Share this post Link to post Share on other sites
welshpug 1,657 Posted January 18, 2007 If the engine temp sensor was unplugged, would it not start from cold really easily? not unless its really really cold! Share this post Link to post Share on other sites
Banjo 1 Posted January 18, 2007 Sounds like its not timed up right, do the dowels line up in the cam pully and bottom pully? Have you tried moving the dizzy? Compression checked? Try running at night to see if anythings arcing out. Ben Share this post Link to post Share on other sites
GLPoomobile 958 Posted January 19, 2007 I'm saying it's the Temp Sensor. I'm a complete mong with engine problems but as soon as I started reading I thought 'aye up, temp sensor symptoms'!. The fact that other people have mentioned it makes me trust that even more. You say is plugged in but have you been mucking around in it's vicinty. I suspect you have cos I remeber you saying you were trying to find your SAD! It could be a dodgy connection even though it's plugged in. I replaced the temp sensor on my old 1.9 cos she was running a bit rich and wanted to rule it out. Turned out the sensor was fine, but because the connector was broken and the wiring was a bit dodgy I f***ed it all to hell by messing around with it. Had I left well alone it would have been fine, but once I swapped the sensor over it was a bag of s*it. As per usual, would have been a perfectly reliable car if untouched. Things only f*** up when I start messing around! Share this post Link to post Share on other sites
pug_ham 244 3 Cars Posted January 19, 2007 Have you plugged the temp sensor plug onto the SAD & viceversa by mistake? Blue plug is CTS & black plug SAD. Graham. Share this post Link to post Share on other sites
Guest BrainFluid Posted January 19, 2007 Man I can hear The Motor God chuckling away on this one... Nope your all wrong but thank you all very much none the less. The real culprit here is Human error Quess who forgot to put the hose back on the botton of the plenum chamber. What a pleb am I....! DoH "Har ha har" Shut it motor god.... . . . "ha har har har ha ha har" . ...Grrr. . . . . . *Frantic spanner waving* Share this post Link to post Share on other sites
tom_m 0 Posted January 19, 2007 doh! glad you got it sorted nate Share this post Link to post Share on other sites
Grim.Badger 15 Posted January 19, 2007 (edited) I was about to suggest that the hose hadn't been re-attached to the plenum because I did exactly the same daft mistake a couple of weeks ago and got the same symptoms I presume the car is getting huge amounts of unmetered air and can't adjust the fuel to match. Edited January 19, 2007 by Grim.Badger Share this post Link to post Share on other sites
Guest BrainFluid Posted January 19, 2007 Thanks Tom The car now starts as easy as pie and idles correctly, mwa ha ha Hey Grim! Easy enough a mistake to make eh! All pretty hidden by the time you got the plenum chamber back on and all that. Not something that either of us are going to forget in a hurry eh!? Share this post Link to post Share on other sites
