Misfire under load
Thread Starter
Junior Member
Joined: Apr 2014
Posts: 35
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2002 mercedes e320 w211 petrol
Misfire under load
Hi Everybody. Please help. I recently purchased a second hand engine for my car (E320 petrol). The engine arrived with a spark plug attached to the plug lead, like the previous owner was checking for spark. I fitted the motor which started up perfectly. It drive smooth under normal driving. The moment you apply load, like up hill, its picks up a severe misfire. No codes and on real time data, it does not pick up any cylinder misfire.
I changed, the plugs, coils, injectors, injector rail, egr, throttle body, air flow sensor and all pneumatics. In fact I changed every part and item above the engine. According to diagnostics, this car is perfect. Why is it misfiring. Please I will appreciate any assistance.
I changed, the plugs, coils, injectors, injector rail, egr, throttle body, air flow sensor and all pneumatics. In fact I changed every part and item above the engine. According to diagnostics, this car is perfect. Why is it misfiring. Please I will appreciate any assistance.
Thread Starter
Junior Member
Joined: Apr 2014
Posts: 35
Likes: 0
2002 mercedes e320 w211 petrol
Hi Everybody. Please help. I recently purchased a second hand engine for my car (E320 petrol). The engine arrived with a spark plug attached to the plug lead, like the previous owner was checking for spark. I fitted the motor which started up perfectly. It drive smooth under normal driving. The moment you apply load, like up hill, its picks up a severe misfire. No codes and on real time data, it does not pick up any cylinder misfire.
I changed, the plugs, coils, injectors, injector rail, egr, throttle body, air flow sensor and all pneumatics. In fact I changed every part and item above the engine. According to diagnostics, this car is perfect. Why is it misfiring. Please I will appreciate any assistance.
I changed, the plugs, coils, injectors, injector rail, egr, throttle body, air flow sensor and all pneumatics. In fact I changed every part and item above the engine. According to diagnostics, this car is perfect. Why is it misfiring. Please I will appreciate any assistance.
