Roll-starting a vehicle

Is roll-starting the engine hard on a manual transmission?

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"Brad P" <bradp_xx@hotmail.com> wrote in message
news:hzYhg.19362$A26.442629@ursa-nb00s0.nbnet.nb.ca...
| Is roll-starting the engine hard on a manual transmission?

No! Just don't use first gear. Use 2nd gear, release the clutch
smoothly and be ready to disengage the clutch when it starts. I haven't
had to do this for many years but have never experienced any ill effects
from starting my car or truck this way.

--
Jarhead




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"Jarhead" <baldintexas@excite.com> wrote in message
news:1149786469_11155@sp6iad.superfeed.net...[color=blue]
>
> "Brad P" <bradp_xx@hotmail.com> wrote in message
> news:hzYhg.19362$A26.442629@ursa-nb00s0.nbnet.nb.ca...
> | Is roll-starting the engine hard on a manual transmission?
>
> No! Just don't use first gear. Use 2nd gear, release the clutch
> smoothly and be ready to disengage the clutch when it starts. I haven't
> had to do this for many years but have never experienced any ill effects
> from starting my car or truck this way.
>
> --
> Jarhead
>[/color]

Cool..thanks for the reply!

also another point. On a few of the vehicles I've roll started if the
battery was completely dead it took quite a decent hill to spin the engine
enough so that the fuel pump would power up and the car would actually run.
I'd always just try and give it gas then as soon as it accelerated I'd pop
it into neutral and let the battery charge for a bit.

Also it is possible to roll start an automatic but I'd only try that on a
rental.

Cheers,
-Dru

"Brad P" <bradp_xx@hotmail.com> wrote in message
news:cpZhg.19389$A26.442802@ursa-nb00s0.nbnet.nb.ca...[color=blue]
> --
> .
> "Jarhead" <baldintexas@excite.com> wrote in message
> news:1149786469_11155@sp6iad.superfeed.net...[color=green]
>>
>> "Brad P" <bradp_xx@hotmail.com> wrote in message
>> news:hzYhg.19362$A26.442629@ursa-nb00s0.nbnet.nb.ca...
>> | Is roll-starting the engine hard on a manual transmission?
>>
>> No! Just don't use first gear. Use 2nd gear, release the clutch
>> smoothly and be ready to disengage the clutch when it starts. I haven't
>> had to do this for many years but have never experienced any ill effects
>> from starting my car or truck this way.
>>
>> --
>> Jarhead
>>[/color]
>
> Cool..thanks for the reply!
>
>[/color]

Is is real easy on a carburated engine (that is how you start a
lawnmower)

Is is possible, but not recommended, on a engine with indirect fuel
injection. There is no power to the computer and the sensors, it may
not fire at all if there is no residual pressure in the fuel lines.
You may meed a hill to let gravity supply enough rpm to the the
generator going.

It is next to impossible on a direct injected engine. The injector
pump has to generate enough pressure for the injection to occur


On Thu, 08 Jun 2006 16:50:21 GMT, "Brad P" <bradp_xx@hotmail.com>
wrote:
[color=blue]
>Is roll-starting the engine hard on a manual transmission?[/color]

DruG wrote:[color=blue]
> also another point. On a few of the vehicles I've roll started if the
> battery was completely dead it took quite a decent hill to spin the engine
> enough so that the fuel pump would power up and the car would actually run.
> I'd always just try and give it gas then as soon as it accelerated I'd pop
> it into neutral and let the battery charge for a bit.
>
> Also it is possible to roll start an automatic but I'd only try that on a
> rental.
>
> Cheers,
> -Dru[/color]

I stand to be corrected but it's been quite a few years
since you could roll start an automatic. When they did away
with the rear pump the trans would no longer turn the engine
over.
Dave

"DruG" <drudadFSPAM@dccnet.com> wrote in message
news:128h1mtfd6pd5f4@corp.supernews.com...[color=blue]
> also another point. On a few of the vehicles I've roll started if the
> battery was completely dead it took quite a decent hill to spin the engine
> enough so that the fuel pump would power up and the car would actually
> run. I'd always just try and give it gas then as soon as it accelerated
> I'd pop it into neutral and let the battery charge for a bit.
>
> Also it is possible to roll start an automatic but I'd only try that on a
> rental.[/color]


The speed that the auto will lock up is around 50MPH but unlikely to get
that fast when just rolling down a hill, you would need to be towed then if
theres another vehicle there you could just jump start it. (Thats a whole
new thread on how to properly jump a vehicle but if anyones interested....)

"M. Cantera" <cantera_2@RemoveThis.netzero.com> wrote in message
news:76dh829ed7e7e1dr24r6sfp31ngjed7aq7@4ax.com...[color=blue]
> Is is real easy on a carburated engine (that is how you start a
> lawnmower)
>
> Is is possible, but not recommended, on a engine with indirect fuel
> injection. There is no power to the computer and the sensors, it may
> not fire at all if there is no residual pressure in the fuel lines.
> You may meed a hill to let gravity supply enough rpm to the the
> generator going.
>
> It is next to impossible on a direct injected engine. The injector
> pump has to generate enough pressure for the injection to occur
>
>
> On Thu, 08 Jun 2006 16:50:21 GMT, "Brad P" <bradp_xx@hotmail.com>
> wrote:
>[color=green]
>>Is roll-starting the engine hard on a manual transmission?[/color]
>[/color]

If the battery has no charge what-so-ever you probably wont roll start it as
the alternator requires a voltage to get charging started to supply power to
the coil(s).

"davidj92" <davidj92LOCK@sigecom.net> wrote in message
news:7NednZuw5uhVVBXZnZ2dnUVZ_omdnZ2d@sigecom.net...
| DruG wrote:
| > also another point. On a few of the vehicles I've roll started if
the
| > battery was completely dead it took quite a decent hill to spin the
engine
| > enough so that the fuel pump would power up and the car would
actually run.
| > I'd always just try and give it gas then as soon as it accelerated
I'd pop
| > it into neutral and let the battery charge for a bit.
| >
| > Also it is possible to roll start an automatic but I'd only try that
on a
| > rental.
| >
| > Cheers,
| > -Dru
|
| I stand to be corrected but it's been quite a few years
| since you could roll start an automatic. When they did away
| with the rear pump the trans would no longer turn the engine
| over.
| Dave
|

Reminds me of an old, old joke.

This guy was stranded along the highway and a woman stopped to see if
she could help.

He said, "His battery was dead and he couldn't push start his car."

She said, "Why not?"

He said, "Because it has an automatic transmission and the car has to be
going at least 35 mph to turn the engine over."

She says, "That's not a problem.", and turns around to get her car
behind him.

He looks up in his rear view mirror and sees her coming up behind him at
40mph.

--
Jarhead






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"Scotty" <scoter1@warmmail.com> wrote in message
news:448947d5$0$10288$afc38c87@news.optusnet.com.au...[color=blue]
>
> "DruG" <drudadFSPAM@dccnet.com> wrote in message
> news:128h1mtfd6pd5f4@corp.supernews.com...[color=green]
>> also another point. On a few of the vehicles I've roll started if the
>> battery was completely dead it took quite a decent hill to spin the
>> engine enough so that the fuel pump would power up and the car would
>> actually run. I'd always just try and give it gas then as soon as it
>> accelerated I'd pop it into neutral and let the battery charge for a bit.
>>
>> Also it is possible to roll start an automatic but I'd only try that on a
>> rental.[/color]
>
>
> The speed that the auto will lock up is around 50MPH but unlikely to get
> that fast when just rolling down a hill, you would need to be towed then
> if theres another vehicle there you could just jump start it. (Thats a
> whole new thread on how to properly jump a vehicle but if anyones
> interested....)
>[/color]

Admittedly I haven't seen more than 1 roll started but it was a 99 or so
Ford Crew Cab Truck. It would periodically not start for no good reason and
so one day out on the block we were all pissed off and decided to try and
roll start it. We were up in the mountains so we had a pretty good hill to
go for it. We got it up to around 60 and then popped er into drive and she
started.

Jarhead wrote:[color=blue]
> "davidj92" <davidj92LOCK@sigecom.net> wrote in message
> news:7NednZuw5uhVVBXZnZ2dnUVZ_omdnZ2d@sigecom.net...
> | DruG wrote:
> | > also another point. On a few of the vehicles I've roll started if
> the
> | > battery was completely dead it took quite a decent hill to spin the
> engine
> | > enough so that the fuel pump would power up and the car would
> actually run.
> | > I'd always just try and give it gas then as soon as it accelerated
> I'd pop
> | > it into neutral and let the battery charge for a bit.
> | >
> | > Also it is possible to roll start an automatic but I'd only try that
> on a
> | > rental.
> | >
> | > Cheers,
> | > -Dru
> |
> | I stand to be corrected but it's been quite a few years
> | since you could roll start an automatic. When they did away
> | with the rear pump the trans would no longer turn the engine
> | over.
> | Dave
> |
>
> Reminds me of an old, old joke.
>
> This guy was stranded along the highway and a woman stopped to see if
> she could help.
>
> He said, "His battery was dead and he couldn't push start his car."
>
> She said, "Why not?"
>
> He said, "Because it has an automatic transmission and the car has to be
> going at least 35 mph to turn the engine over."
>
> She says, "That's not a problem.", and turns around to get her car
> behind him.
>
> He looks up in his rear view mirror and sees her coming up behind him at
> 40mph.
>[/color]

That joke is still funny. Thanks, I got a chuckle out of that.

It depends.

If you do it all of the time, it can be hard on the drive train, but if it
is a way to work around a dead battery, then the harm is mimimal, and is
offset by the obvious benefit of getting the motor to run.

Select the highest possible gear that will get the motor turning, generally
2nd works when the car is pushed by people, and 3rd is good if you get a
push by another vehicle.




"Brad P" <bradp_xx@hotmail.com> wrote in message
news:hzYhg.19362$A26.442629@ursa-nb00s0.nbnet.nb.ca...[color=blue]
> Is roll-starting the engine hard on a manual transmission?
>
> --
> .
>
>[/color]

"DruG" <drudadFSPAM@dccnet.com> wrote in message
news:128h1mtfd6pd5f4@corp.supernews.com...[color=blue]
> also another point. On a few of the vehicles I've roll started if the
> battery was completely dead it took quite a decent hill to spin the engine
> enough so that the fuel pump would power up and the car would actually
> run. I'd always just try and give it gas then as soon as it accelerated
> I'd pop it into neutral and let the battery charge for a bit.
>
> Also it is possible to roll start an automatic but I'd only try that on a
> rental.
>[/color]


I would descourage any attempt to push-start a car that is equipped with an
automatic trans. The transmission will not usually turn the motor over.