Another Gti rebuild starting issue
Posted
#1592091
(In Topic #216278)
Newbie
Engine is a reconditioned DX code engine completely rebuilt
Fuel distributor re conditioned with new seals etc but none of factory screws touched
New cables
New fuel lines front to back
Tank was original but cleaned out and no rust
New vacuum hoses
New petrol pipe to tank
New distributor and leads
New spark plugs
New injectors
What isn’t new but put back on:
fuel pump ( can hear it working)
fuel accumulator
cold start valve
coil ( tested and working)
The issue I have is the following. The car will start on the first turn of the key when cold. If I keep my foot on the accelerator and revs around 1500-2000 it runs sweetly with no issue. As soon as I take my foot off the accelerator engine revs drop until it stalls. It is impossible to start again and just turns over. If I leave it for a few hours it will start first turn again and then stall if revs drop and again refuse to re start. I have checked there is fuel and spark and both are fine but engine turns over strongly but just won’t start. A mechanic suggested I look at the idle control valve or the fuel accumulator. Not sure it is the accumulator as I can see petrol nicely misting out of the injectors. Does this sound the right place to start? I am not sure what is the exact starting process i.e. what does what in what order….
Any advice would be greatly appreciated as it’s getting very frustrating. As I say above I know there is both fuel and spark but once stalled it just will not re start until cold again.
Posted
Settled In
When I got down bottom mine it was fuel regulator warm up valve on side engine block I changed everything nothing made difference till changed mine
But hey hope it help.
Posted
Local Hero
If the cambelt is a tooth out to car will start and sort of run.
Are you using super leaded fuel?
Can you adjust the idle speed screw up so the idle is about 1500 rpm, will it run on its own with a higher idle speed.
Very last thing to touch or mess with is the mixture as you really need the car running to set it up on a CO machine…
Could be the mixture is very lean, when starting from cold the extra fuel from the 5th injector is helping starting/running and when engine gets some heat in it the 5th injector does not fire so that's why it's not starting?
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
Posted
Local Hero
Or maybe the WUR giving incorrect control pressure for a given engine temp.
Posted
Settled In
1983 MK1 Golf four door 1.8T 20V BAM remapped, MK2 dash and loom, TMI interior. daily.
2014 VW California 5.1 with full Sportline kit, weekend home.
2014 VW California 5.1 with full Sportline kit, weekend home.
Posted
Newbie
It appears the problem is fixed..a real head scratch as there was fuel and spark, timing is perfect, new plugs, new injectors, new fuel lines etc
Thanks again for the advice.
Posted
Newbie
I took the WUR apart in case it was dirty and put new seals on it though it appeared clean inside. Now the car won't start at all. I have fuel at the injectors and spark but the car just turns over and won't catch. Any advice is very welcome.
Posted
Settled In
If you have fuel and spark but no go then they must be being delivered at the wrong time?
Is it trying at all or just spinning over?
1983 MK1 Golf four door 1.8T 20V BAM remapped, MK2 dash and loom, TMI interior. daily.
2014 VW California 5.1 with full Sportline kit, weekend home.
2014 VW California 5.1 with full Sportline kit, weekend home.
Posted
Newbie
Posted
Old Timer
Posted
Newbie
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