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Cold starting of direct injected diesel engines.

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Re: Cold starting of direct injected diesel engines.

Postby Mad Husky » Fri May 04, 2018 9:14 am

Just an observation with my own 2.4 tddi which I have been working on, I removed the inlet manifold and egr, while egr wasn't bad gave it a clean anyway then looked at the inlet ohh no1 inlet port virtually blocked with soot no 2 not much better 3 and 4 not too bad cleaned it all up starts a lot better. Prior to this sometimes would take a few cranks to get going other times would start straight away obviously worse in the winter.
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Re: Cold starting of direct injected diesel engines.

Postby twin--turbo » Tue Sep 25, 2018 7:18 am

So...

Should an 07 Mk7 2.4 TDCI 100PS need the plugs for a smooth cold morning start?

TT
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Re: Cold starting of direct injected diesel engines.

Postby loot » Mon Oct 01, 2018 10:19 am

twin--turbo wrote:So...

Should an 07 Mk7 2.4 TDCI 100PS need the plugs for a smooth cold morning start?

TT

It'll be listed as cold start to minus 20 degrees c, in uk we see about 0 at best so you could possibly get away with it, but ppl have suggested that the flow plugs also help emissions and possibly save fuel etc.

My experience was that they were present on my van so I wanted them working, I fitted some nice new Beru 11v ones as per original and with all the updates etc I did on my van, it started on the button every time.

It's amazing how many ppl have brought them to me saying that they're mint etc and I've turned the key and it has taken a few lumpy seconds to get the thing going followed by numerous strange noises then what sounds like a tank.

It's mint innit m8. :P



:shock: :shock:

Ps. They're relatively cheap but get the engine hot as ppl have snapped them trying to remove them, I've never done it but then my vans last owner was a vicar :lol:
56 350 2.2 130ps mk7 with 2 side doors 8)
65 290 2.2 125ps custom with 2 side doors 8)
07 350 170ps
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Re: Cold starting of direct injected diesel engines.

Postby twin--turbo » Mon Oct 01, 2018 7:12 pm

I know I have some sort of glowplug fault, but as it was starting perfectly in the summer I was not worried.. It seemed a little more hesitant in early september but has been fine on these even colder mornings..

I presume the controller has died but expect it's probably been burnt out by failing plugs. I guess if it makes it through winter, there's nothing lost if I snap a plug when trying to do them in the spring..... I did my old BMW E61 530d whith the same horror stories but the dead plugs came out pefect ( hot engine, blow lamp and Shock Unlock).....

TT
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Re: Cold starting of direct injected diesel engines.

Postby loot » Mon Oct 01, 2018 7:47 pm

I think when these plugs snap they leave a hole into the chamber so it'll need seeing through in that case and repairing.
07 should just be a relay R2 and fuse f15 that powers them.
56 350 2.2 130ps mk7 with 2 side doors 8)
65 290 2.2 125ps custom with 2 side doors 8)
07 350 170ps
Ids v86 licence + v86.04 update + xprog here
Ids map here
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Re: Cold starting of direct injected diesel engines.

Postby JT23456 » Sun Oct 07, 2018 11:22 am

I,m in Wales and last nite 1st frost, maybe -2. Hard to start this am. Normally starts instantly, This am, cranked 5 sec, fired and stalled. T hen stared, idled poorly, would not rev up, no power to back up, lots of smoke. No engine lights. After 15 min of coaxing, it regained full power and runs normally. I chg,d the fuel and air filters 4k miles ago. 56k miles on an ,03. Does a blown glow plug fuse show any warning?
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Re: Cold starting of direct injected diesel engines.

Postby Brettbear63 » Fri Jan 21, 2022 9:19 am

my 2.4 tdci starts , then after 10 seconds cuts out , , restarts instantly , then after restart it 10 seconds later cuts out , keeps doing this till its warm , if you drive it it revs ok but if revs drop it goes into tickover and wont rev or , or just cuts out ,
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Re: Cold starting of direct injected diesel engines.

Postby knobby1 » Sun Jul 31, 2022 6:21 am

Brettbear63 wrote:my 2.4 tdci starts , then after 10 seconds cuts out , , restarts instantly , then after restart it 10 seconds later cuts out , keeps doing this till its warm , if you drive it it revs ok but if revs drop it goes into tickover and wont rev or , or just cuts out ,


Thread was started 11 years ago....Last post was near 4 years ago and the person you're replying to hasn't been on the forum since June of 2019. Best you start a new thread with your issue.

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