Basically my g40 wouldn't start today and i cannot work out why. i was running perfectly yesterday, throughout the night at lakeside but today all it is doing is turning the starter motor. the battery is fine and ive tried bumping it but nothing is working. ive replaced the distributor cap and the spark plugs. It has petrol in the tank but the problem must be something simple as it has always started first time.... any help would be very appreciated!
cheers,
jamie.
Is the fuel pump priming?
how can i tell?
When you put the key in, turn the key but dont start and listen for the pump at the rear. Sometimes its best to get a friend to turn the key while your under the pump and listen for it.
Thanks, it is working.
Are you getting a spark?
Nah no spark from any plugs also the king lead doesn't spark when I hold it to earth
sounds like yr coil
but the king lead which is before the coil doesnt spark when i hold it to an earth?
the king lead goes from the coil to the dizzy, which then puts power/sparks down the leads to the spark plugs. if the king lead is not connected to the coil then it won't spark!
sounds like you're holdinh the king lead from dizzy to earth - which means it'll have no power to it
the coil is the square thing the king lead comes from. You are probably thinking of the distributor.
ahh ok ill try that then, thanks
ok turns out that my coil isnt the problem as i just fitted a brand new one. so it must be either king lead (unlikely) or the distributor?
Hall sender?
I had a very similar problem once.
you've checked your fuses I assume? Also check the two 3pin connectors by the coil are correctly on.
Then after that, probably hall sender as Jez said, common polo problem.
Yeh it's not a fuse and I've checked all the plugs. But i have no idea what a hall sender is lol?
Its in the distributor. I think bosch do replacements - many moons ago but may still. That or a new distributor needed. May be wise to get out the multimeter first though before shelling out.
read the engine diagnosis thread in FAQ.
Dug it out for you...
- hall sender: to test disconnect the ignition coil connector, unbolt the distributor from the engine but leave the wiring loom connector connected to it (you can take the cap off if you want). Now turn the ignition on but do not try to start the engine. Turn the distributor by hand, every time the trigger wheel inside goes past the hall sensor, you should hear the injectors fire and the fuel pump run momentarily. I can't remember if it operates leading edge or trailing edge but it doesn't really matter. Just check that turning the dizzy by hand makes the injectors and fuel pump fire. The part number on the correct dizzy should end with a "P", others will have incorrect trigger wheel spacing and will cause running problems. You can also use a dizzy from an 8v mk4 polo which are identifiable by having the hall sender connector on the back (as you look at the engine from the front of the car) whereas the original mk3 polo ones are on the top.
(http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs785.ash1/167567_10150172537838696_757493695_8503923_5191528_n.jpg)
this is the hall sender yeh? the bit below the plug...
yeah, the sensor and connector are all the same piece of plastic.
You can buy new hall senders but there around £60.
right its not that because i got a dizzy and tryed it. ive tried everything i can think of so ill take it to a garage tomorow
Cam and ignition timing all set right?
Hope you get it sorted, fingers crossed it just something thats been overlooked.
Yeh hopefully, thanks for all the help anyway
Fingers crossed it's not an ECU fail. Cheerful fucker amn't I.