I have a gas vaporiser heated by the engine coolant and its' output is connected through an adaptor between the base of the throttle body and the intake manifold where the gas is mixed with air. The fault occured only when I started the engine on lpg from cold. Starting the engine directly from lpg ...

I went to my mechanic with the car started and run on gasoline - no problems. I told him under what conditions my car won't run well and he told me to try something: always start the engine on gasoline, and after the engine is warm switch to lpg. I tried this and I have absolutely no problems, start...

I hoped that my car had an electrical/electronic problem but it seems not... so, I'll take the car to my mechanic on thursday, he is an old fashioned mechanic, good on the mecanical side but with limited knowlegde and equipment on modern electronic car systems, anyway I'm looking forward to hear his...

@Robski: the scope I purchased was for electronics development (2204A), it's not an automotive one, I'm trying to learn about cars as a hobby, and hope that some day I'll be able to fix my car (electric and electronic faults).

What does WPS mean?

Thanks for the answer Steve. I tried to start on gasoline and it behaves the same. The problems I have with the car started almost one and a half years back when the car was running only on gasoline. The problems started with a slight hard start(start in 3 and quickly recover) but never had problems...

I changed the ignition coil, plug wires and plugs and the problem still persists. The problem is there only when motor cold until it warms. The severity of the problem variaes randomly but is present only when motor is cold. Sometimes it takes more time(extra 10minutes) for the problem to dissapear ...

I'm coming back with more info. This is the sensor output when key on engine off when I hit the engine block with a lever. knock_lever.jpg I get this only when I hit the engine block close to the sensor, if I hit the other side of the engine block, I get nothing. In the trace it can be seen that the...

Hi everybody, I have a problem with the an Opel Astra F, x16sz engine, 1.6 petrol, 1995. Hard start especially when engine is cold and hesitates when in load. When the engine is hot, it runs well. I exclude a fuel supply issue because the car behaves the same on petrol and on LPG. I checked the sens...