28-12-2017, 06:31 PM
This is a follow-up to my previous thread about breaking down before Xmas. What happened has been bothering me as nothing really added up.
Bit of background to this ...sometimes when I come to a halt n drop the clutch the engine nearly dies n then catches just before it stalls. I've replaced the ICV but it hasn't fixed the problem. Just before the episode the other day which culminated with smoke appearing from under the bonnet I pulled up the car n guess it may have pretty much stalled before spluttering back to life.
Now this may seem like a stupid question, but is there any way an engine can stall n somehow get a 'kick' at TDC which causes it to run backwards? Have done a bit of reading about this n some say a 4cyl 4-stroke engine can't run backwards n a few others who say they've had it happen to them. E.g. http://www.tractorbynet.com/forums/parts...wards.html
To recap, the symptoms for the very short time I left the car running (4-5 seconds) were:
- Engine running very unevenly/roughly
- Car wanting to go backwards when 1st gear engaged n clutch lifted
- squealing sound (could have been alternator or power steering pump / aux belt complaining at being run backwards.
- Smoke appeared from the area of the inlet pipe at the front of the car.
- Oil in the inlet, particularly coating the back of the throttle body butterfly.
The engine running backwards seems a crazy conclusion to come to but the only one that could explain the weird symptoms!
Edit: It's an XU10J4R btw
Bit of background to this ...sometimes when I come to a halt n drop the clutch the engine nearly dies n then catches just before it stalls. I've replaced the ICV but it hasn't fixed the problem. Just before the episode the other day which culminated with smoke appearing from under the bonnet I pulled up the car n guess it may have pretty much stalled before spluttering back to life.
Now this may seem like a stupid question, but is there any way an engine can stall n somehow get a 'kick' at TDC which causes it to run backwards? Have done a bit of reading about this n some say a 4cyl 4-stroke engine can't run backwards n a few others who say they've had it happen to them. E.g. http://www.tractorbynet.com/forums/parts...wards.html
To recap, the symptoms for the very short time I left the car running (4-5 seconds) were:
- Engine running very unevenly/roughly
- Car wanting to go backwards when 1st gear engaged n clutch lifted
- squealing sound (could have been alternator or power steering pump / aux belt complaining at being run backwards.
- Smoke appeared from the area of the inlet pipe at the front of the car.
- Oil in the inlet, particularly coating the back of the throttle body butterfly.
The engine running backwards seems a crazy conclusion to come to but the only one that could explain the weird symptoms!
Edit: It's an XU10J4R btw