Jake Posted December 13, 2006 Author Share Posted December 13, 2006 have you tried disconnecting the battery, leaving it off for a few minutes and re-connecting? - It's possible something could have 'spiked' when you charged the battery. I've taken the battery off to charge it a couple of times this last week, obviously me keep trying to start the engine makes the battery go flat quite fast I assume the MAF has been ditched and the MoTeC is running from MAP sensor now? I guess so, there's no MAF sensor thing on the intake pipe. Quote Link to comment Share on other sites More sharing options...
Gordon F Posted December 13, 2006 Share Posted December 13, 2006 Perhaps one of those battery conditioner jobbies would be a good buy? As used on classic cars / kits etc. Keeps it topped up. I'd steer away from them if I were you. I used one on my stock car and it did strange things to the (stock) stereo. I now have two batteries for the car. One on the car, running down, and the other fully charged ready to go on when I want to take it out the garage. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 14, 2006 Share Posted December 14, 2006 OK, so what have we got? Jake can you look at these and make sure they are accurate: The problem occurred after a week of inactivity and the battery had flattened The engine turns over but doesn't even try to fire Fuel pressure is OK Fuel is being delivered It's sparking, but actual ignition timing is unknown - however there are no backfires Fresh spark plugs don't change the behaviour at all Igniter pack has been swapped Battery has been recharged It's got to be something that affects all 6 cylinders at once, but with both fuel and spark I'm stumped Unless far far too much fuel is going in or something... Ooh, Jake, you could try making a note of your fuel pressure and adjusting it down say 10psi and seeing if it makes a difference? If not, try another 10psi. Failing that, go back to what it was +10psi and then +20psi. This will crudely compensate for too much or not enough fuel scenarios, and at least change the sound of the engine turning over if not let it catch, if that's the problem. -Ian Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 OK, so what have we got? Jake can you look at these and make sure they are accurate: The problem occurred after a week of inactivity and the battery had flattened The engine turns over but doesn't even try to fire Fuel pressure is OK Fuel is being delivered It's sparking, but actual ignition timing is unknown - however there are no backfires Fresh spark plugs don't change the behaviour at all Igniter pack has been swapped Battery has been recharged That's all correct. It did backfire two seperate times but that was a few days ago, now it doesn't show any signs of firing at all. It's got to be something that affects all 6 cylinders at once, but with both fuel and spark I'm stumped Unless far far too much fuel is going in or something... Ooh, Jake, you could try making a note of your fuel pressure and adjusting it down say 10psi and seeing if it makes a difference? If not, try another 10psi. Failing that, go back to what it was +10psi and then +20psi. This will crudely compensate for too much or not enough fuel scenarios, and at least change the sound of the engine turning over if not let it catch, if that's the problem.OK I'll see if I can figure out how to do that. I guess there's an adjuster on the Aeromotive FPR right? Quote Link to comment Share on other sites More sharing options...
Alex Posted December 14, 2006 Share Posted December 14, 2006 Think it's an allen key bolt adjuster...been a while since I looked. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 14, 2006 Share Posted December 14, 2006 Yep, you use a spanner to slacken off the nut on top while holding the allen bolt still with an allen key, then screw in the allen bolt to raise the pressure or slacken it off to lower it. Once you've got a pressure, you holt the bolt still again and tighten the nut up. You don't need to be accurate for these tests though, only when putting it back. I assume you've got the little gauge on the FPR which you used to check the pressure before. Do you know how to fire up the fuel system without the engine running so you can set the pressure? -Ian Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 Ah! Upon closer inspection I now believe that it's NOT getting fuel through to the cylinders I've taken all the plugs out to do a compression test and I noticed that the plugs are actually bone dry. When I took one plug out the other day it looked damp but now I can see that they aren't wet at all. They do smell faintly of petrol but I suppose they would. Even holding a cigarette lighter flame to a plug doesn't make it catch fire. Next I'm going to swap the 2 fuel injection relays from inside the fusebox of my other Supe. Any other suggestions? Sorry about the previous duff info and thanks for the continued help. Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 Bugger! Swapped those 2 relays from the problem (Blue) car onto the grey car but the grey car still starts fine. What now? Quote Link to comment Share on other sites More sharing options...
Gamer Posted December 14, 2006 Share Posted December 14, 2006 Probably already been covered but have you checked your crank sensor ? Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 Probably already been covered but have you checked your crank sensor ?No. What would a faulty crank sensor do? Throw the ignition timing out? I'd still be getting fuel through, wouldn't i? Quote Link to comment Share on other sites More sharing options...
b_have Posted December 14, 2006 Share Posted December 14, 2006 Jake, I use a simple (but crude) way of checking fuel supply. Remove one of your vacuum pipes from the plenum and inject around 10cc of fuel by syringe (sp) as some one cranks the engine. If it fires, runs and dies its a fuel supply problem (Injectors not firing/locked?) HTH Quote Link to comment Share on other sites More sharing options...
Alex Posted December 14, 2006 Share Posted December 14, 2006 Fuel Pump? Fuel Pump Computer? Fuel Pump Relay? Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 IT'S ALIVE!!! Well fuck me! I put the "EFI Main" and "EFI Num2" fusebox relays from the grey car into this one, bunged the plugs back in and it started first time! I can't understand how come the grey car is running fine on the relays from the problem car though Thank gawd for that. Cheers guys. Quote Link to comment Share on other sites More sharing options...
Gamer Posted December 14, 2006 Share Posted December 14, 2006 Great, glad it's sorted Jake Quote Link to comment Share on other sites More sharing options...
Alex Posted December 14, 2006 Share Posted December 14, 2006 Woohoo...erm so WTF was wrong? Did it need an ECU reset? Quote Link to comment Share on other sites More sharing options...
Ric Posted December 14, 2006 Share Posted December 14, 2006 dry joint in the relay perhaps, moving it made a nice connection hence why the other one runs Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 14, 2006 Share Posted December 14, 2006 dry joint in the relay perhaps, moving it made a nice connection hence why the other one runs Either that, or slightly corroded terminals on the pins? Quote Link to comment Share on other sites More sharing options...
Kev.O Posted December 14, 2006 Share Posted December 14, 2006 Glad your sorted Jake Quote Link to comment Share on other sites More sharing options...
Guest gzaerojon Posted December 14, 2006 Share Posted December 14, 2006 good one Jake Quote Link to comment Share on other sites More sharing options...
Pete Posted December 14, 2006 Share Posted December 14, 2006 About bloody time too! Quote Link to comment Share on other sites More sharing options...
Pig Posted December 14, 2006 Share Posted December 14, 2006 Always nice to see a happy ending! Quote Link to comment Share on other sites More sharing options...
Jake Posted December 14, 2006 Author Share Posted December 14, 2006 About bloody time too!Yeah well it wasn't exactly a normal problem, was it. I'm sure you could have sorted it in 5 mins though Freak problems like this, the ones that nobody else ever has, are getting to be my speciality. e.g. faulty FPR vacuum hose leading to blown engine - ever heard of anyone else having that? Quote Link to comment Share on other sites More sharing options...
Homer Posted December 14, 2006 Share Posted December 14, 2006 e.g. faulty FPR vacuum hose leading to blown engine - ever heard of anyone else having that? You're (almost) not alone there. Had that happen to me thanks to a slow dog bodge on the pressure line; it lasted one lap of the Bedford aerodrome GT curcuit (4.6miles). Somehow iIt's still running Quote Link to comment Share on other sites More sharing options...
Thorin Posted December 15, 2006 Share Posted December 15, 2006 Good news Jake Quote Link to comment Share on other sites More sharing options...
dandan Posted December 21, 2006 Share Posted December 21, 2006 Yep - nice one. Happy for ya.. Quote Link to comment Share on other sites More sharing options...
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