Tell me I'm correct (or wrong if I am!)
Discussion
Max_Torque said:
It's got nothing to do with the engine being turned "backwards" and everything to do with what happens when you jump back into thr car, and go to start it, forgetting it's in gear, back when cars let you do that sort of thing!
(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
wouldn't they just tell you to park it in neutral if that was the case?(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
Hugo a Gogo said:
Max_Torque said:
It's got nothing to do with the engine being turned "backwards" and everything to do with what happens when you jump back into thr car, and go to start it, forgetting it's in gear, back when cars let you do that sort of thing!
(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
wouldn't they just tell you to park it in neutral if that was the case?(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
Max_Torque said:
It's got nothing to do with the engine being turned "backwards" and everything to do with what happens when you jump back into thr car, and go to start it, forgetting it's in gear, back when cars let you do that sort of thing!
(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
No that's not the reason because this car won't crank unless the clutch is depressed!(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
Max_Torque said:
Hugo a Gogo said:
Max_Torque said:
It's got nothing to do with the engine being turned "backwards" and everything to do with what happens when you jump back into thr car, and go to start it, forgetting it's in gear, back when cars let you do that sort of thing!
(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
wouldn't they just tell you to park it in neutral if that was the case?(if you'd put it in first, start in gear would, fire up, and zoom off down the hill. but in reverse, either the starter wouldn't be man enough to fire it up, or having to lift the car up the hill would just stall it out straight away)
KiaDiseasel said:
What a silly thread. The handbook says X. Do X. End of story. What other engines do when they're turned backwards is neither here nor there.
Until it's your engine that's mashed due to following the incorrect instruction from the person you are fighting with to get a repair under warranty?I suppose it depnds on if the engine is chain or belt and if it has an oil pressure fed or sprung tensioner, in the old days with a locked tensioner (like a pinto or Xflow) turning the engine backwards would not damage it and as reverse is the lowest gear the compesion would be most effective in reverse, in say a BMW 4 pot with the oil pressure fed tensioner where just turning it over with a flat battery (IE to slow) causes the chain to jump, i wouldn't advise it.
S0 What said:
I suppose it depnds on if the engine is chain or belt and if it has an oil pressure fed or sprung tensioner, in the old days with a locked tensioner (like a pinto or Xflow) turning the engine backwards would not damage it and as reverse is the lowest gear the compesion would be most effective in reverse, in say a BMW 4 pot with the oil pressure fed tensioner where just turning it over with a flat battery (IE to slow) causes the chain to jump, i wouldn't advise it.
As always dealers staff (both sales and service) didn't know much about the oily bits. They did say it's got a belt (rather than chain). I know it VVC timing on both inlet and exhaust, but as to the finer details????? Fastpedeller said:
Unsure whether to put this in braking or engines/drivetrain. Consider the latter to be correct but mods please move if you wish.
Anyway, to subject. Bought new car, in handbook it says:-
Parking Brake:- If you park your vehicle on a hill and facing downhill select reverse gear and turn the steering wheel towards the kerb.
I have always understood if a vehicle was to roll away in gear the engine compression will stop it, also the engine should NEVER be turned backwards, as it's not designed to do that. Therefore if facing downhill the car should be in a FORWARD gear, and if it rolls it will be prevented by the engine compression.
Am I correct? or is the vehicle manufacturer correct?
The reason you select reverse is so if you then accidentally start it in gear the engine will stall as it's pushing uphill, rather than starting and racing off if you were to accidentally start it in a forward gear.Anyway, to subject. Bought new car, in handbook it says:-
Parking Brake:- If you park your vehicle on a hill and facing downhill select reverse gear and turn the steering wheel towards the kerb.
I have always understood if a vehicle was to roll away in gear the engine compression will stop it, also the engine should NEVER be turned backwards, as it's not designed to do that. Therefore if facing downhill the car should be in a FORWARD gear, and if it rolls it will be prevented by the engine compression.
Am I correct? or is the vehicle manufacturer correct?
/thread
I thought it was nothing to do with which way you turn an engine and everything to do with reverse gears being straight cut. Hence you don't ruin the synchromesh on your first gear if it experiences any load.
I've always left mine parked up in reverse whichever way the car's pointing.
I've always left mine parked up in reverse whichever way the car's pointing.
Petrolhead_Rich said:
Fastpedeller said:
Unsure whether to put this in braking or engines/drivetrain. Consider the latter to be correct but mods please move if you wish.
Anyway, to subject. Bought new car, in handbook it says:-
Parking Brake:- If you park your vehicle on a hill and facing downhill select reverse gear and turn the steering wheel towards the kerb.
I have always understood if a vehicle was to roll away in gear the engine compression will stop it, also the engine should NEVER be turned backwards, as it's not designed to do that. Therefore if facing downhill the car should be in a FORWARD gear, and if it rolls it will be prevented by the engine compression.
Am I correct? or is the vehicle manufacturer correct?
The reason you select reverse is so if you then accidentally start it in gear the engine will stall as it's pushing uphill, rather than starting and racing off if you were to accidentally start it in a forward gear.Anyway, to subject. Bought new car, in handbook it says:-
Parking Brake:- If you park your vehicle on a hill and facing downhill select reverse gear and turn the steering wheel towards the kerb.
I have always understood if a vehicle was to roll away in gear the engine compression will stop it, also the engine should NEVER be turned backwards, as it's not designed to do that. Therefore if facing downhill the car should be in a FORWARD gear, and if it rolls it will be prevented by the engine compression.
Am I correct? or is the vehicle manufacturer correct?
/thread
Little Pete said:
This in a nutshell. There's not enough strength in the internal spring in the tensioner to keep the chain tight.
I wouldn't bump start one either!
Surely bump starting it wouldn't really be any different to using the starter motor? In both cases you arnt going to have hydraulic pressure immediately?I wouldn't bump start one either!
Edited by Little Pete on Sunday 30th October 12:29
a7x88 said:
Little Pete said:
This in a nutshell. There's not enough strength in the internal spring in the tensioner to keep the chain tight.
I wouldn't bump start one either!
Surely bump starting it wouldn't really be any different to using the starter motor? In both cases you arnt going to have hydraulic pressure immediately?I wouldn't bump start one either!
Edited by Little Pete on Sunday 30th October 12:29
a7x88 said:
Little Pete was referring to an engine that uses a hydraulic chain tensioner or similar.
The chain is quite long on the Transit engine and a combination of it being worn and a worn tensioner spring can leave it slack. The violent acceleration caused by bump starting the engine can make the chain jump teeth. Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff