'81 golf GTI start problems after restore.
Posted
#1607593
(In Topic #219276)
Newbie
Ignition or Fuel System?
I’m Sandro from Italy and I’m restoring my ’81 Golf GTI, but I’m not a mechanics..
I’ve problems to run well the car: sometimes starts immediatly (cold engine), sometimes starts but stops after 20-30 seconds. and it does not start anymore.
I have disconnetted one spark plug and when engine try to starts I don’t see fire on spark, only sometimes there is a fire and the engine try to start but then failed.
This is my question: it’s a problem on ignition (coil or something else) or a fuel system problem?
I ask this because when I try to start the engine (and doesn't starts) there isn’t fuel smell from the exhaust, so my hypothesis is that are two problems in the same time: no current on spark and no fuel in injectors (maybe the fuel return directly to the tank?)
Are the 2 problems correlated? So, when there is not fuel in the injector it’s corrent to have not fuel on the sparks?
I've renew:
-fuel tank
-fuel pump
-fuel filter
-spark plugs
-rotor and cap
-engine belts
Sometimes the engine run but if I go for a trip after 2-3 km there is a failure, the engine fail but then restart in autonomy after 2-3 seconds (the car is is movement).
On the sparks there is a black depot (mixture too rich?), before the car restore the sparks were perfect, brown!
thanks in advance for your suggestions and sorry if this is could be stupids questions..
Have a nice day
Sandro
Posted
Local Hero
Posted
Old Timer
Mars red 1.8 GTI tintop now MOT'd and on the road!
http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fwent-to-look-at-a-golf&kfs79=150
http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fwent-to-look-at-a-golf&kfs79=150
Posted
Newbie
I'll update you
Posted
Old Timer
Posted
Newbie
The next work I will watch the WUR.
A question: it's normal that the file pump run also without the switch relay?
Thanks
Posted
Old Timer
The fuel pump should run for a second when you switch on the ignition to purge the system, not all cars do this. It should then running when the engine is cranking and when running.
You need to check that your ignition system is healthy and valve timing is correct before moving on to the fuel system. Here's a link to my thread when I was getting my car going, you will need to be methodical and patient but these cars are basic and I doubt you'll have any problems getting it running. There are plenty of other posts on the forum as well which will help.
https://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=technical%2Ffuel-systems-and_3%2Finjector-testing-and-k
Don't be afraid to ask questions but you will need to provide info on tests you've carried out etc.
Good luck.
Mars red 1.8 GTI tintop now MOT'd and on the road!
http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fwent-to-look-at-a-golf&kfs79=150
http://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=projects%2Fyour-mk1-golfs_2%2Fwent-to-look-at-a-golf&kfs79=150
Posted
Newbie
Thanks a lot
Sandro
Posted
Local Hero
I don't know of too many folks that will tear out pages of a book and send them to you. PDF's of a scanned page would be ok I suppose.
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