Technical 1368cc pictures (internals) - Engine problem diagnosis

[randomizered]

Following on from my oil consumption thread, I decided to strip the engine, took loads of pics, so thought they may be of interest!

Started stripping to find oil in the throttle body, removed the injectors to find oil on them, removed manifold to find the closed valves were actually hidden by little puddles of oil on top of them!!!!!!!!



Here is the block after the head removal. The coolant leaked in on removal.....not sure about all the oil in there though :S




Here is the bore...note the honing marks and also some wear marks:



Here is the top of the head....at least all the valves are still there, and don't appear bent:



Here is the underside of the head:



Here are some more marks on the bore:







Looks like the pistons will have to come out now

There doesn't appear to be anything majorly wrong at the top, but signs point to some possible piston problems. Never stripped a bottom end before, so not sure how easy/messy it is, and what to expect.

I do have a Haynes manual though, for a 1242 16v, which should help me out a bit.

If it is a piston problem though, how does that explain the oil in the inlet?


One other thing to note.....once the cams a locked the pistons should be 4 in line, but two were at 47.5mm from deck height, the other two were 51mm, so the belt wasn't 100% timed up!!!

What this difference makes in terms of degrees, I'm unsure of, it may be negligible.


If it need piston work or re-boring etc....it means the whole lot has to come out

Hope you enjoyed the pics anyway


Kristian

 

[fingers99]

I'd guess the oil is blow by.

Oh poo.

Pics of the bottom end would be cool.

 

[randomizered]

I think so too!

I will ring one of a few local rebuilders tomorrow...they may confirm and prefer the block with pistons in. If i pull it though...trust me, there will be pictures

Kristian

 

[cc1]

Sounds like crank case pressure build up and blowing oil through the crank case breather into the throttle body.

 

[randomizered]

Yeah, but LOTS of oil, and that will be caused by the rings gone won't it.

Hey chris, your 1242 sitting about and in good nick

Pretty annoyed about it to be honest. I guess it could be esy to balme self mapping and the megasquirt, but i never had any issues on the 1242 16v and made a lot more miles on that!

It did it from day one, the funny noise...i just though it was a water pump bearing rattle or similar....it was probably the pistons slapping about at high rpm!

Kristian

 

[Whiley]

meh bad luck fella, gl with rebuild am sure you wouldnt have a problem doing it yourself tbh

 

[cc1]

Only with a full strip and measuring equipment can you tell if things are ok.
With that amount of oil in the intake, It has to be coming from the head vent pipe.

 

[100hpJames]

switch the engine with your mums and get hers repaired under warranty...... *wakes up* lol

 

[cc1]

Don't realy trust engines from scrappies as you don't know where they have been stored and for how long.
If the car was a rear ender, then maybe the driver couldn't and had abused the thing from day one? Strange things happen, Like the poeple on a plane traveling back from a flight safety conference and it crashed....

 

[cc1]

If you feel you need my 1242 to keep you going whilst the 1368 is under investigation then your welcome to it as I have no plans for it as yet. Sweet engine.

 

[randomizered]

meh bad luck fella, gl with rebuild am sure you wouldnt have a problem doing it yourself tbh

I will strip it and put it back, but if it needs honing and rings, i've never doen it before, can't afford for it to go wrong, and not 100% on waht to do. As gasket sets are £50+, one restrip and your a whole lot of money less.

Only with a full strip and measuring equipment can you tell if things are ok.
With that amount of oil in the intake, It has to be coming from the head vent pipe.

Yep, I'll chat to some local rebuilders....what they want, they get, block, pistons, etc. Its a bit of an art, and not as simple as most stuff i do...plus most of them talk in funny language...thous, 0.00's of an inch etc :S

switch the engine with your mums and get hers repaired under warranty...... *wakes up* lol

I did consider, but i don't fancy castration

Don't realy trust engines from scrappies as you don't know where they have been stored and for how long.
If the car was a rear ender, then maybe the driver couldn't and had abused the thing from day one? Strange things happen, Like the poeple on a plane traveling back from a flight safety conference and it crashed....

James suggested timing belt slipped on impact....possible from what i've meausered.

The engine are a bit thirsty regrdless, I know my mums 100hp needed several top ups and is only at 9K itself. Perhaps it never had a top up or attention before the crash...or maybe it locked up causing a crash

My last engine, 1242 16v was from scrappy, dragged off the muddy floor, no history, but i stipped the top, rebuilt and it was mint! I think i was complacent with this as it was low miles. Any unkonwn engine in the future will get a complete strip down It doesn't make sense not too in the long run.

Cheers,

Kristian

 

[randomizered]

If you feel you need my 1242 to keep you going whilst the 1368 is under investigation then your welcome to it as I have no plans for it as yet. Sweet engine.

your a very decent guy!

It was only said in jest, but if it comes to the 21st and its not runnig, you may get a call

Shame you haven't made use if it yet..it's a real blast!


Kristian

 

[arc]

fook, i see what you mean about the oil

 

[Brooky]

...plus most of them talk in funny language...thous, 0.00's of an inch etc :S

A thou of an inch is 0.001"

 

[randomizered]

fook, i see what you mean about the oil

yep, at least its only done 300 miles and is niec and clean thats the only savin grace.

Kristian

 

[J333EVO]

Wow, doesn't look too good, hope you get it sorted out and very nice offer from CC

 

[cc1]

That power plant shure likes extra lube..

 

[randomizered]

That power plant sure likes extra lube..

Yep...i dread to think what the new 1368cc T-JET 150 use with regards to oil. I'd imagine a fair bit more agian!

Wow, doesn't look too good, hope you get it sorted out and very nice offer from CC

Cheers mate Lets hope emmas is goin well ... and yep CC1 is an A1 guy


Kristian

 

[J333EVO]

Cheers mate Lets hope emmas is goin well ... and yep CC1 is an A1 guy


Kristian

Emma's is going really well thanks, and TBH since you asked about oil consumption it has been very low, more like what I would expect, but think its down to engine being run in now as it only had 8K on when we got it, so has covered about 15K now.

 

[randomizered]

Emma's is going really well thanks, and TBH since you asked about oil consumption it has been very low, more like what I would expect, but think its down to engine being run in now as it only had 8K on when we got it, so has covered about 15K now.

mine had 8K on when i got it, and i did a further 10K in it roughly....been doing from 400-700 miles a week at the monent! ine had the rattel from fittment though, and i think it was fooked tbh. it WILL be sorted at somepoint though

Cheers,

Kristian