Hi All,
First off, she runs as many know after my nightmare with wires (ok, nightmare to me seen as i dont like wires!) so thanks to everyone for that, wasent as hard as i was making it in the end, still have a red with black tracer wire left and but it runs without so not sure what to do with that! not sure if its map sensor or what, it goes to pin 1 if i remember correctly, which is ecu live? but shes 100 percent runs without haha.
Thats the good news over with, now the bad..... It runs like crap haha. Missfire under light load until about 3k and it picks up and under hard throttle it bogs down and then picks back up. I havent driven the car down the road incase anything is amiss and i make it worse!
Now i'll start by saying its on a AB dizzy and no matter where its positioned it does the same.... (timing lights fixed so not great for setups, DOW)
Firstly with all these sensors i have a vague idea how to check/adjust them but well tbh, im not great i'll be the first to admit it. so im not sure which/where to start, especially seen as my multimeter batteries died last night (out til silly 0 clock trying to fix this, went to it this morning and batteries are flat, think i left it on last night) so if anyone could advise where to start?
Now secondly, the most important part of my fails, i fitted a vernier and STUUUUPIDLY when i stripped it down to locktite the bolts ive fitted it back on 180 out, yes... really! so yes, you guessed it.... its timed 180 out on the cam! :-\ Doesent get much worse does it!
Now it ran like shit then, however it did turn over with a bar a few times before, no valve contact so i started it not knowing the cock up i'd made! Its only after checking everything i noticed number 4 wasent on rock number 1 was! I have rotated it 180 and spun it over again and theres no strange valvey kinda noises to suggest damage and it did start, very little taps and runs ''ok'' at tickover, sticks nicely at 960/980 rpm until revved and it bogs as i say or misses then clears.
Not sure what else to add really, umm, anyone local to junction 27 of the M6 to inspect my inability.... I'd rather not go messing as it did run before hand alrite i believe so im sure its something ive done, just not sure if the 180 out has anything to do with it.
All being well its getting a compression test tonight to see, i'd rather not take the head off straight away given ive just had put a new headgasket and bolts on it.
Anyone help a G get back on the road :-[
Hall sender or coilpack maybe?
well ive had a coil break down on me in the past on the 1.0 that the car previously had. It was a different kind of miss, this is more a splutter asif its not enough fuel or air kinda thing, the coil breaking down last time was more a no spark miss.
Coil is off the 1.0 that i had originally, was stored in my bedroom why the engine got swopped so its been dry :-( 3 months since last use and it was A-OK last i used it.
Umm, trying to explain it best i can really, if theres anything else that would help just ask.
Try put a video of it up.
My mate had a problem with the misfire under light load and went he went on boost. His problem was a coilpack.
Might be worth replacing it with the 6n polo one.
When were the injectors last cleaned? Might of got some crap build up inside?
What have you done to your car since it was last running then? Rebuild or something?
Injectors are alrite tbh, the company i work for has a sister company that is a diesel injector /pump specialist and ive had them in there to be checked, the verdict is A-OK.
I dont have a coil pack actually, so would have to buy one of them.
Umm, ye could say that..... Ive had the head off for a gasket and new bolts, inlet off for a check over of the seals in the head (save taking valves out and that) and checked over the throttle body. The vac lines are all new, the map sensor is new and cut to 480mm as specified and umm, what else have i done.... thats it really! Its on different sensors to a polo thermostat housing wise however they are off a golf (m10x1 fitting instead of rubber seal) and the ratings are the same as the polo so i cant see it messing the ECU up that way.
What have you modified on the wiring side? It's a G40 conversion right?
Usually just change the ECU and engine bay wiring harnesses fusebox forwards and it's all fine. Am guessing that you only had the G40 ECU loom and had to mate it to the 1.0l engine harness? If so, double check that you've got the inline fuel pump wiring working.
Ye just a G40 conversion Andy, on a stock polo apparently there is a yellow plug in the scuttle for 1 plug on the G40 loom, 3 wires in said plug, diagnostics, fuel pump and a red with black tracer that could of been either rev counter or ecu live, turns out its pin 1 which is ecu live but engine starts and is fine without it so diagnostics wire and that red black is left and the fuel pump wire i connected to the SPI 1.0 injector loom plug as they had the same wires and i was running that for oil pressure sensors anyway.
EVERYTHING is stock bar them wires and the obvious wire swops everyone does to fit them in a non G'd car.
The inline pump is right behind my drivers seat (aftermarket uprated item i read about on here) its fekin loud and 100 percent primes and runs with the car. :-)
sorry forgot to say, i didnt have a FULL G loom, i had the ecu loom/engine loom. The white plug to the fusebox is mine from the 1.0
Spent abit more time on her tonight, got it timed up and still running like shit. Bogs as mentioned before and at low revs constant rpm it misses worse and worse and then dies. Restarting it and same again. Its died now and won't start, I think its killed the battery so gna get that on charge. It just clicks at the starter.
Anyone? :-(
What chip is in the ECU, what injectors is it running? Presume you've now sorted cam timing and ignition timing is being done with blue temp sender unplugged?
What timing marker are you using? The CL covers have the TDC marker in a different position to the G40 if memory serves, but their crank pulley is marked correspondingly different. So worth checking that you've got both parts from a G40.
Hi andy, not sure on the chip it came with the car. Injectors are standard and they've been ultrasonic'd at my work :-)
The timing covers are all stock G items, its timed against the front most post on the bottom, the trailing edge where its flat. I dti'd it (with a screwdriver) and that's where the TDC was.
Update anyway, the car runs, ok....(Ish) now. The small ecu live wire is plugged into a random ignition switched wire and it runs better. It means on ignition the pump keeps on priming and doesent go off but also means it revs more happily. The down side now I've managed to safely drive it is, rolling upto junctions revs drop sometimes and it dies. I've read this can be the ISV? I'm going to buy a new multimeter today now she's useable (ish) to have a looksie.
Any help grealty appreciated anyway.