Cold Starting

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Tom.JTC

Active Member
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293
Location
Essex
Just had first frost this morning, bit nippy. Went out about 8:30 to start the Defender after clearing all me windows. Turned key to position II, glow-plug/choke light came on for 4-5 seconds before going off as it always does, I left it in position II for a further 20-30 seconds before starting.

Started quickly, within about a second. But idle was rough, seemed like it wasn't running on all four. Kicked out clouds of wispy white smoke that hung around, until about 15-20 seconds had passed, then idle smoothed out a bit and smoke reduced to a slight puffing from exhaust. Got in and drove away, bit sluggish up the road but as to be expected from a cold diesel, perked up soon. No smoke from exhaust on idle when warm, usual black/grey cloud if you boot it.

Mainly looking for advice on what to check first about this problem, as it's only gonna get colder. Been readin' Buster's guide for glow-plug renewal, worth checking them all first and giving it a new set? I'm assuming plug timing is correct, the light always goes off after 4-5 seconds, I normally leave it another 15-20 seconds at least before turning key though.
 
Pretty certain on the tdi engine once the light goes out that it, it has stopped heating the plugs.
I dont use the heaters on either of my 200tdi engines, flick and start, if anything they dont seem so keen if i use the plugs first.



Lynall
 
I know it's said a good 200 shouldn't need any heating before starting, I always usually let the light go out before starting, starts quickly all the time, only once has it had to turn over more then 1/2 a turn to fire.

Just a little concerned over why it ran so rough and smoked half the drive out when starting in the frost yesterday morn. I did use it on Saturday for a short trip in the morning, then back in evening, didn't use it on Sunday.

Cheers though Lynall, cleared up the plug timing for me. :) Might stop me sitting there for ages once the light goes off. :eek:
 
No some cars do exactly that its called post heating, whereas as on our tractors we only get pre heating, the reason for post heating is to help keep the things running from a cold start and for emissions, i should add i believe in case im wrong.
I had a renault years ago that did exactly that, it was a 93 model so defo not a new idea


Lynall
 
Cheers for the info guys, been helpful.

Used the Landy a fair bit today, though it's not been that cold. Been skipping waiting for plugs and going straight to start, started up fine with no real difference. Will give this a go when it's next frosty to see if it's any different, otherwise I'll stick to waiting for the light to go out and start it right after. :)

Guess there's no real reason to mess about with glow-plugs while she still fires quick.
 
Had the same sort of problem the past couple of days as the OP except I started it as soon as the light came out. Que lumpiness and lots of smoke :eek:

Assuming its a problem with the glow/heater plugs can this be checked in situ or should I take them out? What's the resistance supposed to be?

I also noticed it wasn't turning over quite as quickly as it normally does so got the trickle charger on overnight to see if it does it again...
 
Just had first frost this morning, bit nippy. Went out about 8:30 to start the Defender after clearing all me windows. Turned key to position II, glow-plug/choke light came on for 4-5 seconds before going off as it always does, I left it in position II for a further 20-30 seconds before starting.

Started quickly, within about a second. But idle was rough, seemed like it wasn't running on all four. Kicked out clouds of wispy white smoke that hung around, until about 15-20 seconds had passed, then idle smoothed out a bit and smoke reduced to a slight puffing from exhaust. Got in and drove away, bit sluggish up the road but as to be expected from a cold diesel, perked up soon. No smoke from exhaust on idle when warm, usual black/grey cloud if you boot it.

Mainly looking for advice on what to check first about this problem, as it's only gonna get colder. Been readin' Buster's guide for glow-plug renewal, worth checking them all first and giving it a new set? I'm assuming plug timing is correct, the light always goes off after 4-5 seconds, I normally leave it another 15-20 seconds at least before turning key though.
the extra time you gave it they were cooling down it is on a timer when light goes out then start, they are at there hottest then. White smoke is unburnt fuel
 
Cheers Fur Trapper, yes the smoke stinks of diesel.

Nippy again today, went out about same time as before and fired it up just as the light went out, same result, gave it a few revs and it smoothed out fairly well but returned to a bit of a lumpy chug on idle. Again fine once driven up the road.

Mark - From what I've read, best thing to do to check plugs is to remove them one by one and connect to a 12v supply off a battery, end should glow red-hot within a few seconds, it's suggested to hold them in a vice as they get very hot, if they're working that is. :p

Should I put up with it as it does fire-up OK just runs rough until driven, or is it worth testing and renewing the plugs to give it a bit more life in the mornings? Cheers. :)
 
for winter I just give it 10 min to warm up, go back in house get coffee and lunch box , its warmed up a little and alls well. worst thing on a diesel is start and go in cold weather, it shortens the life of them. just allow a little more time in the morning
 
for winter I just give it 10 min to warm up, go back in house get coffee and lunch box , its warmed up a little and alls well. worst thing on a diesel is start and go in cold weather, it shortens the life of them. just allow a little more time in the morning

it may not be there when yu go back out to it :(.
 
worst thing on a diesel is start and go in cold weather, it shortens the life of them. just allow a little more time in the morning
I remember hearing the best way to warm them up is to drive them. So this isn't true then? When it's cold enough to have it run rough I usually let it idle for a minute or two before pulling off down the road anyway, it's not quite start and go immediately.

Would it be better to let her idle for a bit longer?
 
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TDI glow timers do carry on giving current after the lamp goes out,but I'm not sad enough to know how long for......
If you want to know listen to the relay dropping out after the lamp has gone out.;)
 
not sure if this will help you but i put the 200 tdi lump from my disco into my 90 just over 18mths ago(new plugs fitted now done about 15k miles) and i just jump in turn the key and drive off no pre heating or waitng for light(s) and i abuse it to the full haven't serviced or checked anything on it since fitting and have had no props not even in last yrs hard frost
 
Same here i get straight in and turn the key dont wait for plugs and she always fires without even a full stroke, but i do let it idle for a min while i sort myself out.
 
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