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cosworth trying to start but wont?

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Old Sep 19, 2009 | 08:16 PM
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Default cosworth trying to start but wont?

as above car is trying to start but wont.. lets the odd backfire out of it any ideas be great lads, cheers hugh
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Old Sep 19, 2009 | 08:26 PM
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timing? was it running before and have you done anything to it or replaced anything like plug leads
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Old Sep 19, 2009 | 08:29 PM
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check that ALL 4 lugs ARE on the bottom pulley!
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Old Sep 19, 2009 | 08:41 PM
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Originally Posted by louie1
timing? was it running before and have you done anything to it or replaced anything like plug leads
hi louie, the car hasn't been started in bout year an half ive been trying to get it started the last 3 month no joke, i had the fuel pipes on wrony way round and moved the phase sensor about today it sounds like its trying to start times, its had a new phase sensor and new cps and i even got a different ecu i really think its down to timing myself but it all looks ok, cheers hugh
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Old Sep 19, 2009 | 08:43 PM
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Originally Posted by Alvyn
check that ALL 4 lugs ARE on the bottom pulley!
hi mate, yea thats what i was thinking too they are all on but i damaged parts of it trying take it of at a stage there's little chips out of it between the lugs, would this stop it from going? cheers hugh
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Old Sep 19, 2009 | 08:49 PM
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if the lugs are intact and the gap is fine it should be ok. has the fuel gone stale.
double check the timing setup, have you had the belt off?
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Old Sep 19, 2009 | 08:57 PM
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Originally Posted by louie1
if the lugs are intact and the gap is fine it should be ok. has the fuel gone stale.
double check the timing setup, have you had the belt off?
i put 2 gallon of fuel into it about month ago i might put more into it tomora just to be sure, yea had the head off it mate basicly everything of it bar the pistons and sump.. gona hav another day at it tomora, thanks for your help so far louie, cheers hugh
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Old Sep 19, 2009 | 08:58 PM
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The way I see it is there are 2 main things the car needs, fuel and spark. When a car wont start mate break it down into simple steps. First check if you have fuel. If you have fuel check if you have any spark from the plugs. If no spark from plugs check leads. If no spark from leads check if there is spark from king lead. If no spark from king lead move attention towards coil etc Basically just work your way back through the ignition system until you find the problem.

If you have spark and fuel on all 4 cylinders, then you know its either a timing issue (which if it has been sat and not touched is unlikely). Check you have fuel in there, preferably new fuel not old crap. Make sure tps sensor is good condition, make sure you have all 4 lugs on bottom pulley. Theres not much else that it can be.

O yeah and make sure the firing order is correct, seen that too many times lol
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Old Sep 19, 2009 | 09:12 PM
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Originally Posted by fatmike
The way I see it is there are 2 main things the car needs, fuel and spark. When a car wont start mate break it down into simple steps. First check if you have fuel. If you have fuel check if you have any spark from the plugs. If no spark from plugs check leads. If no spark from leads check if there is spark from king lead. If no spark from king lead move attention towards coil etc Basically just work your way back through the ignition system until you find the problem.

If you have spark and fuel on all 4 cylinders, then you know its either a timing issue (which if it has been sat and not touched is unlikely). Check you have fuel in there, preferably new fuel not old crap. Make sure tps sensor is good condition, make sure you have all 4 lugs on bottom pulley. Theres not much else that it can be.

O yeah and make sure the firing order is correct, seen that too many times lol
hi Mike, thanks yes i will be going over her tomora just as you said ticking off everything so should hopefully ill get to bottom of it, wel of to pub now to take my mind of cars for one day lol, thanks again Mike, cheers hugh
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Old Sep 20, 2009 | 10:40 AM
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If it's not been started in a year and a half, take all 4 plugs out put a little oil(table spoon) into each pot and spin over for 10 seconds, replace plugs and try again, the extra compression from a better seal often makes the difference if rings are stuck.
tabetha
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Old Sep 20, 2009 | 10:59 AM
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Ive had this exact problem left car parked up for about a year went to start it and it would sound like it fired then nothing took me ages to find problem eventually found it was ignition amplifier all was well when i parked it up.
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Old Sep 26, 2009 | 01:25 PM
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ok im back at the ecos AGAIN, right checked few things got new fuel double checked timing have spark and injectors, when im trying to start it it lets a BIG backfire out of it every 15 seconds or so... help needed lads, cheers hugh
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Old Sep 26, 2009 | 01:33 PM
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Have u timed it up with the lug or the notch on the crank pulley
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Old Sep 26, 2009 | 01:38 PM
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Originally Posted by Barry R
Have u timed it up with the lug or the notch on the crank pulley
hi barry, i made sure i timed it up with the lug, could be for breaking if don't get it sorted shortly this is going months now barry, any others ideas barry, cheers hugh
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Old Sep 26, 2009 | 01:43 PM
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what gaps have you set them all to mate
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Old Sep 26, 2009 | 02:36 PM
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Originally Posted by Barry R
what gaps have you set them all to mate
barry have all gaps sorted but im wondering do you know what way the spark leads are meant to be in the cap its a 2wd dizzy cap, cheers hugh
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Old Sep 26, 2009 | 03:00 PM
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yes i do

1 is bootom right looking from above it then it 3 above that

4 is top left next too block 2 below that coil in the middle
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Old Sep 26, 2009 | 03:01 PM
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how do the plugs look? fouled/wet? check the coolant temp sensor has 5v, if so maybe replace the sensor if the plugs are wet

sounds like it could be timing also though, phase sensor might not be right.
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Old Sep 26, 2009 | 03:22 PM
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Originally Posted by Barry R
yes i do

1 is bootom right looking from above it then it 3 above that

4 is top left next too block 2 below that coil in the middle
thanks barry was just checking to make sure but there ok, hugh
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Old Sep 26, 2009 | 03:26 PM
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Originally Posted by vroooom ptssssh
how do the plugs look? fouled/wet? check the coolant temp sensor has 5v, if so maybe replace the sensor if the plugs are wet

sounds like it could be timing also though, phase sensor might not be right.
hi mate, had plugs out there they looked wet with smell fuel off them? timing is perfect mate, it was letting the odd backfire out of it but nothiing now, would that sensor stop her from starting? cheers hugh
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Old Sep 26, 2009 | 03:35 PM
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whats the crank sensor like
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Old Sep 26, 2009 | 03:49 PM
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it will be very dificult to start if the sensor is knackered, or it wont start at all and just foul the plugs up.

Clean the plugs, unplug all the injectors, crank it over and see if it fires on the un-burnt fuel, then get someone to crank it over and plug one injector in at a time and see if it fires...

Last edited by vroooom ptssssh; Sep 26, 2009 at 03:51 PM.
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