On ‎27‎/‎09‎/‎2018 at 16:48, kiran_182 said:

but once hot it splutterd and struggled to restart, would missfire when you turn ignition on, before you try crank

erm, it sparked at wrong time without turning the key to make the starter motor engage and spin the engine?

That makes no sense to me.

 

 

Yeah i know, me either. Turned the key into the on position to wait for the relay buzz and the exhaust let off a bang 

Unburnt fuel in hot exhaust would surely already have ignited.

So when you energised the coil before cranking there must have been a random spark in a cylinder whose exhaust valve was open but exhaust stroke not completed, and that cylinder had not fired when it should have (a little before compression stroke finishes).

 

Hall sender or low tension wires.

 

 

 

Edited 29 September, 20187 yr by dvderlm

Dizzy is new so possibly ht leads though thwy are new too. Dont even have 10 miles on them

Not HT, it sparks.

 

Low tension.

Wires to the Hall sender and coil?

 

Coil itself?

I posted a resistance test and most wires were 0.6 ohms on 5  guage wire. Will go back and check volts 

 

Coil is new and i swapped a spare in too 

Have you tested the Hall sender in the new dizzy?

 

Any chance a wire is rubbing and shorting to chassis or earth of another part of loom?

 

if it was me ..

 

when it dies , crank it with a spark tester like this to see if theres a good spark

https://www.ebay.co.uk/itm/Avoid-Fire-Adjustable-Ignition-Coil-Tester-Spark-Test-Circuit-Tool-Securely/173516876911?epid=2134835718&hash=item2866696c6f:g:HoYAAOSw~X1bj8pi

 

also undo the bolt in the end of the fuel rail to check fuel is pumping...can also check the pressure q cheaply 

https://www.ebay.co.uk/itm/Fuel-Injection-Pump-Pressure-Injector-Tester-Test-Pressure-Gauge-Set-Case/263174824642?hash=item3d467122c2:g:SMwAAOSwzgRW1F0c

Thanks for the links, will get those

 

There is an earth to the hoist mount on the head thats been repaired with bullet connectors, the other 2 earths are new

earths can cause issues....no harm in running an extra one just temporarily if need be

 

Went to this ladt sat and it wouldt fire atall, cranked alot but wouldnt start. Started it on tue and it ran as it did in the vid, only difference was sat morning was a few degrees colder than tue 

fuel pumps buzzing?   pull a plug and see if it sparks

 

Just done this ony car and found a problem:

 

Spare spark plug in the lead and earthed on hoist eye, ignition on and wait for fuel pump buzz

 

Number 3 sparks when i do this. None of the others do i assume its also sparking at the wrong time when running

strange

 

check the cam timing , with engine set to 1# tdc , confirm the rotor points to the notch in the dizzy housing  , then check the plug leads go 1342 

I set the timing dead on the cam mark and leads are 1342 i think though the rotor arm was facing 3 at tdc

do it again then ....needs to face to #1

 

set it up and take some pics

This was taken when i timed it the other week

 

 

Question, could it be the wrong hammer on it with notch on the inside placed differently?

dunno mate...mine points forwards for #1

 

looks like a non genuine dizzy...is it a proper gt one? theyre not all same 

I was purchased according to the gt part number. Will try the spare old dizzy that came off a gt

That looks a lot like a cleaner version of a 6n distributor which I have on my abd.

the fact its cranked round to the end of the adjustment slot suggests something is wrong

ab is the only suitable replacement if you cant find a 3f one

 

https://www.ebay.co.uk/itm/VW-GOLF-MK3-POLO-MK4-6N-1-4-AEX-GENUINE-DISTRIBUTOR-030-905-205-AB/323486020599?hash=item4b5144f3f7:g:oFsAAOSwcL5XMcag

Still having issues.

 

Replaced:

• starter

• alternator

• battery

• dizzy

• coil

• ht leads 

• earths 

• spark plugs 

 

Checked the loom again and found different reading to before. Checked the dizzy plug and could find a few pins on the ecu that fired off but only 1 with a propper reading but that was .03 and dropped to .00 most other pins was just a 1 which is defualt 

 

Also checked the fuel rail plug and that too had readings for 1 pin coming through multiple ecu pins 

 

Bad loom?