Team-BHP - View Single Post - Why diesel engines are revved before switching ignition off?

falcon · 1st February 2006, 16:25

OK, My reasons for doing so...
1. Both my vehicle batteries were in a terrible state... if I did not race the vehicle for at least a minute before turning them off, there was no way they would start later on... so I had to do it! I've changes both batteries now, so its not needed… but... old habits die hard.
2. The Classic's engine is in need of an overhaul, I burn nearly a litre of oil every month... And as a result, my exhaust smokes (thick black smoke) a LOT... A temporary solution (I plan to get the engine rebuilt soon) that I am currently using, every month, fill the entire exhaust with water and then rev the engine till all the water is pumped out... repeat this about 3 times, and then no more smoke!!! To facilitate filling water, I have got a 1/2 inch bend pipe welded at the engine end of the exhaust... Yes, one more thing I have done is make my fuel mixture very lean.... have lost out on power and pickup :-( but at least the PUC is within limits...

1st February 2006, 16:25	#24 (permalink)
falcon BHPian Join Date: Jun 2005 Location: Mumbai / Goa / UK Posts: 83	OK, My reasons for doing so... 1. Both my vehicle batteries were in a terrible state... if I did not race the vehicle for at least a minute before turning them off, there was no way they would start later on... so I had to do it! I've changes both batteries now, so its not needed… but... old habits die hard. 2. The Classic's engine is in need of an overhaul, I burn nearly a litre of oil every month... And as a result, my exhaust smokes (thick black smoke) a LOT... A temporary solution (I plan to get the engine rebuilt soon) that I am currently using, every month, fill the entire exhaust with water and then rev the engine till all the water is pumped out... repeat this about 3 times, and then no more smoke!!! To facilitate filling water, I have got a 1/2 inch bend pipe welded at the engine end of the exhaust... Yes, one more thing I have done is make my fuel mixture very lean.... have lost out on power and pickup :-( but at least the PUC is within limits... __________________ The price of freedom is eternal vigilence.