My car starts and idles fine. However, when put in gear and let go of the break the car rolls but when you try to accelerate it the car does not want to again speed and if you floor the accelerator or move it half way even it stalls and back fires.
I drove it to the pump to get gas and then it did not want to start after warming up, when I finally was able to start the car by flooring the accelerator alot of back smoke and high concentration of gas could be smelled in the air. The car however did roll back to the house limping.
I did remove the cats and they did help me gain like 10miles per hour. But it still is not happy when warmed up specially but does not want to accelerate at all when cold or hot.
Any suggestions?
Fuel pump is at 3.5 bars pressure,
new injectors and tank was flushed and new gas added.
There wasa vaccum leak but it did not significanlty change the cars performance.
It has a straight 6 engine in it with new wires and plugs.
Alright, update on the issue
The issue is still there however, when it starts cold it does work fine till it gets to operating temperature. I do feel a it of hesitation but it does accelerate. After about a 5 minutes and a mile long city drive the same error happens. If I accelerate there is no response. and it makes a pop if I force the pedal down. So I pulled in to the gas station and filled it up with gas. After that it did start when I floored the accelerator and then it drove back normally with the accelerator responding. I am not sure where to do from here.
I have checked the fuel pressure, it remains the same
I have replaced the warm up regulator with two units and still the car does the thing mentioned above.
*Car does not have a o2 sensor with Lambda drive, its mechanical K-jet
Any suggestions......
The car is running extremely rich. Your carburetor is either shot or needs to be adjusted.
Also check the vacuum lines on back of manifold they have a habit of breaking. Why your at it also check, the fuel regulator. Sorry I'm throwing a lot of stuff at you but I cannot say with certainty what it is. The things I can think are. Faulty carb. Carb needs adjustment, vacuum leaks, failing faulty fuel distributor. Sorry I can't be alot more helpful.
No carbs, that car has Bosch K-Jetronic mechanical fuel injection. That was a popular fuel injection system for European cars in the 1970s and 1980s (Mercedes, Saab, Volvo, etc.). I don't know if yours has the Lambda O2 sensor feedback circuit or not. If so, check the O2 sensor. Running too rich may be a problem with the fuel distributor or airflow sensor. Mixture can be adjusted at the airflow sensor. Proper fuel pressure is critical. (I have no idea what a "bar" equates to.) Here's an overview of the injection system which may help. It includes instructions for adjusting the mixture in the "Airflow Sensor" section:
https://www.benzworld.org/threads/bosch-k-jetronic-overview.1450844/
