just put my cossie together (2wd) running stage 3 chip, 3 bar and greens, set the timming its got spark and got fuel but it only offers every now and then to start, checked all the plugs and connections havent a clue what wats up with it anyone any ideas?

 

i set up a stage 2 on my rst and have the same prob.

 

for the sake of an hrs work I would change the chip,injectors and plug in the 2bar from the original set up and see if it runs, if it does I'd say the chip IS wrong m8!

 

just towed it down the road and put it in gear and put the accleratore th the floor after about 2 mintutes the car started popping and banging and the dump valve was going haywire, im dead certain the crank and the cams are timed perfect, and i have also timed the distributor where sounds like the likely cause of this, but does any one know if there are if any of the engine sensors brake or stop working would also cause this?
cheers

 

cozzie,

Have you put the chip in the correct way round,?
besides putting in the chip and 803's, and actuator, and map sensor, have you touched anything else,
if the cam timing, and dizzy for phase timing is correct , check TDC sensor air gap approx 0.4mm to 0.6mm
also check the phase sensor gap in the dizzy 0.2 to 0.3mm..
also the firing order of plug leads, when you check for a spark is it
consistent,



DAVE R,

 

can u comfirm the way you have timed crank and cams etc? ie what marks u have used

 

well i have just put a newly rebuilt bottom end on head gasket etc etc, so pretty much everythin has been tampered with, i have changed the injectors and swapped ecus with a mate but still the same

timed up by points on the cam facing inwards level with the rocker cover and the crank by the mark slighltly to the left of the center of the engine
(100% sure thats all correct cause normally if it wrong pistons will hit the valves i thought)

will have alook/tinker at the bits u mentioned 2moro and see if theres any difference

oh and it does have a cosistant spark

cheers folks

 

First thing I'd check before spending money... I spent three hours looking for an electrical/sensor fault only to find out the leads were all mixed up

 

the crank by the mark slighltly to the left of the center of the engine
(100% sure thats all correct cause normally if it wrong pistons will hit the valves i thought)


on the crank pulley HAVE you USED the "V" mark then or the lug just past it AS THAT'S WHAT YOU USE ON A COSSIE

also if timed up wrong NOT always do they hit the valves ENOUGH to stop the engine running m8

 

the lug mate, sure pistons hits the valves if u use the v bit

 

make sure the fuel pump wires are on the right way round, i made that mistake once

also, the crank sensor at tdc should be facing the lug to the right of the v in the pulley, and take the dizzy cap off and make sure it is facing towards no1, its at about 2 o'clock when you look from the front of the car.

 

fuel pumps correct, gonna replace the crank sensor 2moro along with the ignition module check the distributor and leads aswell

ill get back to you 2moro when it still doesnt run!

 

sounds like the leads are wrong to me


jay

 

As Alyvn said it can be out and not have valve contact, i had it out 1 tooth once with no probs of valve contact!!

As for timing marks

 

maybe it was the lug to the left then

 

if in doubt of timing.....you could always check my post in the Essay's section.

It has pix if you're unsure in anyway

 

ok towed it down the road again, and it started but was running really rough smoke out the exhaust and had to rev it to keep it running, let it run for a few mins switched it off but when i tried to start it again it was back to normal, the spark plugs look a bit too wet to me any ideas?

 

What have you done since saturday before you decided to start her up again ?

A bit in the dark here... not sure how we can help

 

the only thing i did was get the 3 bar map sensor to earth properly because the bracket was a bit rusty, ive since put a standard map sensor on it, i have noticed tho if you unplug all 4 injectors it offers untill it runs dry of fuel, but plug them back in and theres less chance of it offering.

never had anything like this before, its doing my head in

 

if u have put the standard map sensor on there with a stage 3 chip it wont run right if not at all mate

jay

 

ok that was a bad idea ill change it back, ive also put light greens in instead of dark greens does this make a difference?
shall i chuck the dark greens back in?

 

Dark greens use a 3 bar map, light greens a 2 bar (depending on chip).....

To be honest, i'd suggest you get it to a pro soon, before it all goes horribly wrong.....

 

if u have a stage 1 chip use that with the light greens and standard map sensor see if it still plays up then try stage 3 chip 3 bar and ur 803s an see what gives

jay

 

cheers, il give it another go when i have a minute

 

told u to try that ages ago m8

 

Not being funny, but you say you are running a stg3 chip and you are playing around with different types of injectors.
The injectors and the chip have no idea about each other, you could be over-fuelling / under-fuelling, who knows... as for changing the map sensor, same thing...

Next thing we'll hear is that you're over boosting, or have no boost, or have blown your engine up...

Get it looked at by a pro before you damage it beyond repair, chip / injectors / map sensor types go together as a combination, you can't just swap things around

 

yeh frogs right u do sound like ur having a struggle im not saying ur no good ect but mabey spending some little cash migfht save u a fortune in a long run as sometimes a litlle knowledge is dangerouse and in this case very exspensive


jay

 

At least he he hasn't tried yellows, greys or blues yet

Seriouly, get a pro to look at it

 

i can confirm the engine is timed right and the injectors and spark are all firing and in the right order, all consistant

im just wondering if the petrol has gone flat?

is petrol still flammable even if it wont start a engine?

i have heard of cars being sat for ages and after a while its no use and have to replace the fuel?

sounds like it could be it to me?

 

how old is the fuel ?

 

hi its not the fuel, it looks like the loom is knackered as its not picing up the map sensor hence flooding the car with fuel, loom has seen better days so on the look out for another one, its not worth repairing it.

also it doesnt matter what chip you fit or injectors or map sensor the engine still runs fine what ever, tried my ecu with stage 3 chip in my mates standard cossie and it ran fine.

acossie tuner said it was perfectly fine to try someone elses ecu as a process of eliminating that as a problem! couldnt see how a ecu could possible blow my engine up anyway, fair enough using the wrong set up and driving it, but i was only ussin the wrong set up to see if it would start

 

Fair enough Trouble with forums, is, you don't know always who you are talking to, and sometimes a post comes across wrong.
I had the feeling you didn't know what you were talking about and possibly making an expensive mistake - if that wasn't the case, I apologise

Hope the loom sorts it out

 

its alrite, i should probably have explained in more detail what i was up to, everyones got there on way of problem solving and eliminating possible causes, no 2 people think the same way!

cheers for the help everyone !