Car is VW Golf 2 TD 1987, old tractor but is giving me a big headache. ![happy]( "happy")
I thought i will deal with it in second it's nothing but a old technology, no big deal but now i am![headbang]( "headbang")
It's friend of mine's car and he invested already a lot of money in that car and the car just came from shop and i promised to deal with the problem but now I am in trouble, it will take me more time then any other car. Here is the story.
The car in the morning or after a long stand is difficult to start and immediately goes off. When you start it for the second time it fires but only on 3 cylinders. If you pull the cold start lever it will fire better but again only on 3 cylinders. Sometimes you need to add gas to keep it running. Cylinder No1 was always the one which did not work and occasionally joined another one which did not work. The car works for about 5-10 minutes and there is a lot of smoke coming out of the tail pipe, mostly dense white and black smoke, after that period of 5-10 mins runs normally on all 4 cylinders and runs all day normally until the next time or day. These symptoms are there for a long time.
This has been done so far on the car:
Replaced head (used) and head gasket (old head dropped on cylinder No. 2)
Replaced piston rings (new)
Replaced some of the valve guides (new)
Replaced valve seals (New)
Replaced hydraulic lifters (new)
Replaced injector nozzles (new)
Replaced oil pump (used)
Replaced Bosch pump (used but good)
Controlled compression (23 bar bit low but equal on all cylinders)
The ignition angle is set to the recommended value
Checked glow plugs
Removed the inlet hose from the filter to the IP and drifted into a can of fuel
After all this car is doing the same.
Conclusion: The car obviously works on 3 cylinders when it starts for the first time and after 10 minutes it is normal. Because of smoke, I conclude that it does not burn the fuel properly. Causes I've eliminated:
-Pressure of fuel and fuel quantity is not because the good pump is placed
-Compression is not because it is the same on all cylinders and these vehicles are working under a compression of 17 bar
-The air supply, fuel supply, water or oil in the cylinder is not because always the same cylinder no 1 is not working
-The air in the fuel supply is noticed in the form of small bubbles, bubbles goes from pump to filter when you stop cranking and if car doesn't fire. The oil comes from the turbine to the inlet manifold but because of the above reason I do not doubt it, it can not always come in the same cylinder causing it not to fire.
-High oil pressure that could possibly open valves via hydraulic lifters, I do not believe because another oil pump was placed
-Mechanical damage or wear is not because it would be present all the time, if the valve was wearied out, it will be wearied out all the time, not just the first 10 minutes.
The main question is what can not work properly within the first 10 minutes and then work normally, what can be mechanically damaged so that the defect corrects after 10 minutes or after a short warm-up?
My assumption is a bent connecting rod that after this short time of warm up elongates with some miracle. Piston, connecting rod, camshaft? I have no idea any more, I'm done. Lost.
If anyone has a suggestion I'd be happy to listen to him.
Do you know what may cause this strange situation? Obviously I am missing something.
I thought i will deal with it in second it's nothing but a old technology, no big deal but now i am
It's friend of mine's car and he invested already a lot of money in that car and the car just came from shop and i promised to deal with the problem but now I am in trouble, it will take me more time then any other car. Here is the story.
The car in the morning or after a long stand is difficult to start and immediately goes off. When you start it for the second time it fires but only on 3 cylinders. If you pull the cold start lever it will fire better but again only on 3 cylinders. Sometimes you need to add gas to keep it running. Cylinder No1 was always the one which did not work and occasionally joined another one which did not work. The car works for about 5-10 minutes and there is a lot of smoke coming out of the tail pipe, mostly dense white and black smoke, after that period of 5-10 mins runs normally on all 4 cylinders and runs all day normally until the next time or day. These symptoms are there for a long time.
This has been done so far on the car:
Replaced head (used) and head gasket (old head dropped on cylinder No. 2)
Replaced piston rings (new)
Replaced some of the valve guides (new)
Replaced valve seals (New)
Replaced hydraulic lifters (new)
Replaced injector nozzles (new)
Replaced oil pump (used)
Replaced Bosch pump (used but good)
Controlled compression (23 bar bit low but equal on all cylinders)
The ignition angle is set to the recommended value
Checked glow plugs
Removed the inlet hose from the filter to the IP and drifted into a can of fuel
After all this car is doing the same.
Conclusion: The car obviously works on 3 cylinders when it starts for the first time and after 10 minutes it is normal. Because of smoke, I conclude that it does not burn the fuel properly. Causes I've eliminated:
-Pressure of fuel and fuel quantity is not because the good pump is placed
-Compression is not because it is the same on all cylinders and these vehicles are working under a compression of 17 bar
-The air supply, fuel supply, water or oil in the cylinder is not because always the same cylinder no 1 is not working
-The air in the fuel supply is noticed in the form of small bubbles, bubbles goes from pump to filter when you stop cranking and if car doesn't fire. The oil comes from the turbine to the inlet manifold but because of the above reason I do not doubt it, it can not always come in the same cylinder causing it not to fire.
-High oil pressure that could possibly open valves via hydraulic lifters, I do not believe because another oil pump was placed
-Mechanical damage or wear is not because it would be present all the time, if the valve was wearied out, it will be wearied out all the time, not just the first 10 minutes.
The main question is what can not work properly within the first 10 minutes and then work normally, what can be mechanically damaged so that the defect corrects after 10 minutes or after a short warm-up?
My assumption is a bent connecting rod that after this short time of warm up elongates with some miracle. Piston, connecting rod, camshaft? I have no idea any more, I'm done. Lost.
If anyone has a suggestion I'd be happy to listen to him.
Do you know what may cause this strange situation? Obviously I am missing something.