E

elmagnoon

New Member
1995 Discovery 1 with a 300TDI and Autobox




The car lets out black smoke like crazy almost all the time and specially when under load, like turning the air con on. A mechanic had told me a while back that it needed rings though he was wrong on everything else he said or did!
It did not loose power compared to before it started to smoke or even since I bought it. I will test it at high speed on a highway tomorrow.

Assuming it needs new rings, can I do them without taking the engine our or apart as in out of the sump? I got lazy when I did the cylinder gasket and didn't do the rings then.

Thanks
 
pistons come out the top after undoing conrods ,but black smoke doesnt sound like rings ,blue would, with poor cold starting and oil useage ,have you checked air filter ,pipes to turbo and pipes from/too intercooler ,injectors
 
pistons need to come out of top but can be done without taking the engine out.black smoke seems to be more of a fuelling issue though rather than rings? i would have thought that it would be harder to start and lose power when the compression is down so i would be making sure that no one has messed with the pump ( as long as its not EDC)and also check all the filters and pipework from the intercooler and lastly the injectors for being worn.
 
hifly said:
ha, he has edited his post, shame its not changed my quote of his post.:D
Click to expand...

No it doesn't work like that :p only the original is deleted or edited :D


Daft bugger cant hide this bout of stupidity ;) he changed it just as I quoted him though :rolleyes: the bastid
 
OK I have a few secrets :D
1-Numerous mechanics screwed up my car badly so now I'm fully in charge of doing that myself.

2- It was hard to start for a while and was told it was due to bad glow plugs that were ceased in the block. So I wired in a relay (specifically designed for buses and trucks) to run the starter on 24 volts while everything else remain 12.
I have since did the cylinder gasket and in the process replaced the glow plugs with brand new ones but I just love how fast the car starts on 24! I know I'm shortening the life of the starter and happy with that for the time being. I also have a brand new starter as spare.

4-I was proud of myself after the cylinder gasket job so I thought I would take a peak at the timing belt and at the same time adjust the injection pump timing. Right after that I noticed the excessive smoke and tried to readjust it even though it was dead on as per manual. I moved it a bit off both directions and in both cases the car wouldn't start.

Gas filter is changed every 3000 KM and I just replaced it today. Intercooler was cleaned twice.

I also took removed the hose coming out of the cyclone from the air intake and let it dangle down. Drips a bit but and that's also fine.

So it sounds like a visit to my crappy mechanic to adjust the pump.
 
elmagnoon said:
OK I have a few secrets :D
1-Numerous mechanics screwed up my car badly so now I'm fully in charge of doing that myself.

2- It was hard to start for a while and was told it was due to bad glow plugs that were ceased in the block. So I wired in a relay (specifically designed for buses and trucks) to run the starter on 24 volts while everything else remain 12.
I have since did the cylinder gasket and in the process replaced the glow plugs with brand new ones but I just love how fast the car starts on 24! I know I'm shortening the life of the starter and happy with that for the time being. I also have a brand new starter as spare.

4-I was proud of myself after the cylinder gasket job so I thought I would take a peak at the timing belt and at the same time adjust the injection pump timing. Right after that I noticed the excessive smoke and tried to readjust it even though it was dead on as per manual. I moved it a bit off both directions and in both cases the car wouldn't start.

Gas filter is changed every 3000 KM and I just replaced it today. Intercooler was cleaned twice.

I also took removed the hose coming out of the cyclone from the air intake and let it dangle down. Drips a bit but and that's also fine.

So it sounds like a visit to my crappy mechanic to adjust the pump.
Click to expand...
with timing cover on and pump plate off ,set timing up so crank pin fits a pump pin ,then use progressively smaller drill bits instead of pump pin with 3 bolts on pulley slackened put a spanner on pump nut turn clockwise against pin tighten 3 bolts and try ,keep using smaller drill bits till it knocks then go back till it doesnt thats perfect pump timing
 
Thanks a lot. I'll give that a try today. Just out of curiosity, does that mean clock wise is retarding the timing as in less fuel? My understanding of the injector pump timing and how it functions is quite basic and think of it in simple terms like more or less fuel.
 
clock wise as looking at the pump from the front advances injection point ,if not at best point of injection more fuel will be used,although advance retartd has nothing to do with the amount of fuel injected
 
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