A dumb question is the one you dont ask

Submitted: Monday, Jun 14, 2004 at 18:00
ThreadID: 13749 Views:1113 Replies:9 FollowUps:2
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Due to my recent spout of starting problems with my Manual Patrol 2000 3L TD, we went to Stockton Beach this weekend, at the top of every dune we stopped onmy wife said make sure your pointing down hill, being none the wiser, I did.

I then got thinking (after we were off the dunes) IF i had a petrol wagon (Manual) yes I could roll down and clutch start even with a pretty dead battery.

What about a diesle.....does the same principle apply? or is it also pretty reliant on the battery being pretty well charged?

Paul
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Reply By: Lone Wolf - Monday, Jun 14, 2004 at 18:06

Monday, Jun 14, 2004 at 18:06
Okay....... I'll have a go. If it's sand, then when yoy let the clutch out, wont the wheels just drag in the sand like brakes?
AnswerID: 63106

Follow Up By: Paul - Monday, Jun 14, 2004 at 18:19

Monday, Jun 14, 2004 at 18:19
depends on how soft the sand it and how fast you can roll down the hill.

Ok ,so it was dumb !!!! , As I've just been out trying some stuff...... (be it on concrete and tar) its one of those things where I wish I'd tried and tested before posting and wish I could withdraw.......but I did say the dumb questions are the ones you don't ask !!!

Name withheld
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FollowupID: 324440

Follow Up By: Lone Wolf - Monday, Jun 14, 2004 at 18:22

Monday, Jun 14, 2004 at 18:22
Paul, no such thing as a dumb question. Hell, I've just learnt from the post below that if my diesel is cold, I'n buggered!

Something else held........
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FollowupID: 324441

Reply By: Patrol22 (Queanbeyan - Monday, Jun 14, 2004 at 18:17

Monday, Jun 14, 2004 at 18:17
While never have had to roll start my (or anyone else's diesel for that matter) I suspect that if the engine was warm/hot and you could get a roll up there is no reason it wouldn't start. Let it cool down and you'd have somewhere between Buckley's and bugger all chance of getting it going. I always carry a Super Crap battery pack - haven't used it on myself yet but used it on many other vehicles.
Great investment for about $50.
Cheers
Pete
AnswerID: 63109

Reply By: Mrs Diamond - Monday, Jun 14, 2004 at 18:38

Monday, Jun 14, 2004 at 18:38
no such thing as a dumb question.
only dumb answers
AnswerID: 63115

Reply By: Member - Luxoluk - Monday, Jun 14, 2004 at 18:42

Monday, Jun 14, 2004 at 18:42
I can remember the days when they cranked em by hand ... and that was to get it started! You sure can start them by dropping the clutch however they will be a bit cantankerous when dead cold. Some of the higher tech stuff will need a power source to excite the electrics before the push begins.
Cheers
AnswerID: 63116

Reply By: Leroy - Monday, Jun 14, 2004 at 20:59

Monday, Jun 14, 2004 at 20:59
let my mate park my 3.0l Gu at the boat ramp the other day and he left the lights on! (what's that beeping noise you say!!!) and returned that evening to find a completely dead batt. Not even the alarm would chirp. I tried to roll start it going down the boat ramp and it wouldn't even fire. I suspect because the glow plugs were dead cold I wasn't going to get any joy. Defeats the purpose of getting a manual really!

Leroy
AnswerID: 63143

Reply By: CMB - Monday, Jun 14, 2004 at 21:20

Monday, Jun 14, 2004 at 21:20
Paul,

If you can turn your diesel engine off with the key, it will have an electric solenoid on the stopper on the fuel pump (car, bus, tractor etc).

If your battery is dead flat, you won't be able to energize this solenoid and so you won't be able to start your engine by towing etc no matter how hard you try.

I have seen 2 guys try to tow start a diesel for 1/2 an hour once near our botanical gardens (I offered a jump start but they were "nah, we're right mate" sort of guys). I left them with it after they called RACQ as one was a member.

We have several farm Hilux's that can be hard to start on cold mornings. A trick we use is to push the vehicle backwards and when you get a roll up you turn on the key. This uses the last of the power to energize the stopper solenoid and charge the glows. When the glow light goes out, jump in, hit the clutch, select reverse and then dump the clutch as you hit the starter. Works every time but is harder if the battery is too flat to wind the engine over at all. We use reverse so that we can use the tray bars to push on. Good thing the Lux's are light. If you are going to try this in a forward gear, use 2nd gear and watch what you use to push with. Don't run over yourself!

I would not like your chances of tow starting etc a vehicle in cold weather if you only had enough power to hold the stopper solenoid and not charge the glows. That is not a problem up here in CQ as we don't get below 10 on too many occasions.

Regs,
Chris.
AnswerID: 63147

Reply By: Bilbo - Monday, Jun 14, 2004 at 22:35

Monday, Jun 14, 2004 at 22:35
When I was having battery probs on my Ford Maverick TD/GQ ute I used to bump start it in reverse, backwards down my sloping driveway quite regularly. As long there's enough in the battery to hold the fuel solenoid in (very low current req'd), it was a bit rough with no glow plugs, but it started. Just had to hold it on high RPMs on idle until it got the engine warmed up. Mind you I live near the caost in Perth and it doesn't get below freezing.

Bilbo
AnswerID: 63165

Reply By: Jon - '88 TD42 GQ - Tuesday, Jun 15, 2004 at 17:38

Tuesday, Jun 15, 2004 at 17:38
Have been involved push starting two diesels successfully.

One was GQ with a flat battery (two actually - why I don't have a manual battery isolator!) from running a fridge, another a Toyota 40 series that was close to death in every respect. Both on cold engines. Neither was much of a problem. As said above you do generally need enough juice for the fuel solenoid (which I am more familiar with than I ever wanted to be after the kill switch the previous owner attached to mine failed and I didn't know it was there!!) but I don't believe it needs much juice. So yeah, not a problem most of the time.

Personally, I have a dual battery and jumper cables.
AnswerID: 63274

Reply By: Lone Wolf - Tuesday, Jun 15, 2004 at 18:39

Tuesday, Jun 15, 2004 at 18:39
Paul, dunno about you mate, but I have learnt 3 things about my diesel if the battery is flat.
Thanks for asking the question for all of us.

Cheers
AnswerID: 63290

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