Big Problems

Hello,

Over this last week I've noticed my 2.5 N/A starting to rev up a little higher on its own (ie. running on own oil), so I've had a good look at it today. The things blasting oil out of the dip stick tube and hissing if I leave my finger over it. It's also blowing out of the oil filler cap really heavily. It's worse than it was before I stripped it down, de-glazed it and fitted new piston rings a few months ago.

What's wrong with it? Surely my new parts haven't worn away already? Is there something else that could be potentially causing the problem (ie. blocked oil pump)?

If it looks like my engine is worn again, I wont think twice about selling it, but I am reluctant to think that new pistons, with new rings, each in deglazed cylinders can have wrecked themselves after three months

Any suggestions?
Thanks in advance

-Pos

what was the condition of the bores? - did you just visually check them ?

why not bite the bullet and go for a 200 conversion - have seen good engines going for around £200 recently

The whole thing's ****ed. Crunching in all the gears now as well. I'm not going to bother trying to fix my n/a again. Might consider a 200tdi and part ex mine, or buy an engine and drop it in. Toyota Hilux's are also a tempting option.

pos said:

Toyota Hilux's are also a tempting option.

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you cant be saying things like that in here !

read some of oddies recent posts about having a 200 put in - he's like a kid with a new toy, and he's calculated that he'll have saved himself the price of the installation from the better MPG within not many months

oh right!, Thanks for the info, will have a scowl around...

pos said:

What's wrong with it? Surely my new parts haven't worn away already? Is there something else that could be potentially causing the problem (ie. blocked oil pump)?

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No not worn unless they were fitted incorrectly.

A blocked oil pump is not the cause here, I am sorry to say its back to square one.

How you been driving it? driving it gently? did you load the engine up well initially to bed the rings ? it could be your glazed up not that knowing that is going to be a lot of help.

As suggested 200tdi the answer, otherwise silk purse etc,

I know it's not the same engine, but we have had to strip a recently overhauled 2.25 petrol motor that was not run in properly and had glazed the bores. I know it goes against the grain to accelerate hard in a newly-overhauled engine but it is the way to bed the rings in. If you google on running-in or similar there are lots of web sites that tell you how to bed rings in.

Sean said:

you cant be saying things like that in here !

read some of oddies recent posts about having a 200 put in - he's like a kid with a new toy, and he's calculated that he'll have saved himself the price of the installation from the better MPG within not many months

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There's no "like" about it!! - and that was paying someone to put t in, Pos you sound like you're wayyyy more mechanically savvy than me, do it yourself and you will pay for it in no time at all if you do a few miles, and the tdi is pretty bombproof. From whatyou've said the rest of your car is pretty sound so it is probably worth saving, for a couple of hunbdred quid outlay (prob 500 for the engine, clutch and bits you need)

And mention Hilux again and it will be coventry for you me lad!!!

I like my tractor engine though! I will consider a 200 tdi, and I know somewhere that has a fair few kicking about, but I could also just trade the whole thing in and get something a little bit newer with the engine and all ancillaries already in.

I'll make some phone calls tomorrow to try and see what's my best option, including some prices for a 200 tdi (disco block) and conversion kit.

I'm still likely to strip my N/A back down again just to see what has gone wrong. If it's cracked pistons again the thing can bugger off, but if it's rings or glazing I'll fix it and run it again.

I thought my engine wasn't likely to glaze for like another 15 odd years. Running in wise, I towed my dads car up some hills along a 2 mile round trip. I also worked it hard, with running in oil and then changed the oil after 500 miles or so.

Surely there must be something else that's causing this problem. It's just deteriorated over about a week.

-pos

you did put the conrods in the reet way round?

yes but after doing to job, I did realise that one of the big end caps didn't go on the same way as the others. The shells are all in right, and the caps fitted right, but I think I may possibly have one the wrong way round. What problems would that cause?

yer most likely have a oil hole in them who's porpoise in life is to squooose oil onto the thrust side of the bore. if yer installed them arse about face then yer thrust side will be getting minimal lubreekayshun leading to accelerated bore wear.

There's only going to be one in the wrong way round if anything, but would that cause a massive massive amount of pressure to be building up? The thumb over dip stick tube test blasted oil out all over the wing.

If I check the bores and find the culprit, I will need new piston rings again, am I right?

Aye, but it might only be one thats worn fast like Slob said.

where did you get the rings from ? - i've known cheap copy rings to split and break up within less than a thousand miles on um

local specialist, they're ****part pistons and rings. I will take the head off next weekend.

pos said:

local specialist, they're ****part pistons and rings. I will take the head off next weekend.

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it's not unknown for their parts to fail or be made of plastacene

i thought plastacene was to hard for some of there parts