 | Home > Puma (Tdci) > Injector seal gone |
 
|
|
|
| dilukabey Member Since: 17 May 2011 Location: Sri Lanka Posts: 173  
|
Today I found low engine oil level and when oil lid opened, some oil sprayed on to the bonnet. Then found out two Injector seals gone badly and replaced immediately and now all ok. My mechanic said the same thing has happened to few puma engines which he had repaired earliyer.
In my country the diesel quality is poor, so wondering this occur due to poor quality fuel? Anybody experienced the same.? Many thanks. Regards, Diluk |
||
28th Jun 2014 10:42am |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
|
how would you get excessive pressure in turbo intake pipe when the air filter is on the other end of the same pipe
|
||
|
28th Jun 2014 5:19pm |
|
| bga86 Member Since: 17 Jan 2014 Location: Here and there Posts: 205 
|
The rocker box breather pipe goes into the intake pipe after the air filter. The injector washers/seals leak causing combustion pressure to fill the rocker box causing massive pressure build up, the escape route for the pressure is through the breather pipe into the intake side of the turbo. The impeller looked like it had been attacked with a Dremel! Car had full history and as said next to no miles in the grand scheme of things.
|
||
|
28th Jun 2014 5:37pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
yes after filter , but any pressure built up in that pipe would go back out filter ,so no excessive pressure could built up
ok yes fumes from rocker box would go through turbo but that would not damage the turbo as there the same fumes you get from the crankcase all the time from slight breathing past pistons and rings not saying there wasn't damage to turbo but maybe from air filter lid not fitted correctly |
||
|
28th Jun 2014 5:58pm |
|
| bga86 Member Since: 17 Jan 2014 Location: Here and there Posts: 205
|
You may well be correct but there was no other explanation for the turbo being so damaged. It wasnt just a slight bit of blow by when the pipe was removed, it was plumes of exhaust and oil smoke accompanied by so much pressure you couldn't hold your finger over the end! In my mind if the engine is running the excess pressure will be pulled into the turbo by the turbo itself spinning, not back up to the air filter (the only way there would be no 'suck' in the intake pipe to allow excess pressure to escape is when the engine isn't running in which case there is no excess pressure being produced). When the intake pipe was removed there was evidence of oil mist from the breather entrance in the intake pipe to the turbo but nothing back up to the airbox.
|
||
|
29th Jun 2014 7:14am |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
yes any fumes will be sucked through turbo , only way fumes would go back to filter would be if there was more going in through breather pipe than turbo was sucking
all I was saying that there wasn't excessive pressure in the intake pipe , but yes there would be excessive pressure in the breather pipe with injector seals gone I don't think fumes or oil mist would damage turbo blades as the fumes are only smoke really nothing big enough in them to do it and the exhaust side of turbo puts up with it ok all the time too much oil could be bad as engine will run on its own oil , then you cant stop it (only stall it ) and they will run til they die was it a 2.2 or 2.4 ? |
||
|
29th Jun 2014 8:08am |
|
| bga86 Member Since: 17 Jan 2014 Location: Here and there Posts: 205
|
Yes I agree I meant the excess pressure entered the intake side of the turbo via the breather pipe. It was a 2.4, I have pictures of the turbo somewhere which I will post if I can find them.
We seen to have hijacked the op's thread  |
||
|
29th Jun 2014 8:15am |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
interesting it was a 2.4 , worked on hundreds and hundreds of the 2.4 tdci engines (mainly transits ) and cant ever remember having washer problems , lots of injectors on the earlier engine but not washers
I always thought maybe because the injector is in oil all the time they run cooler or something making the washers last at least with the ford engine 99% of the time they come out easy not like the merc engine where you can spend 2 hours chipping the black cr@p away just to see the injector then another 2 hours getting the out the hole for each one mercs blow washers all the time |
||
|
29th Jun 2014 8:31am |
|
|
|
| All times are GMT |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2025 Futuranet Ltd & Martin Lewis
