What's wrong with my engine?

1. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

   #1 26th April 2010, 08:26

   Hi all,
   
   kind of an on going problem really. On startup my car gives of a small puff of smoke (blue I think which leads me to belive it's burning oil). Driving it's fine but does smell a bit if I give it the beans from time to time. Also when I take my foot off the accelerator the revs stick upfor about half a second to a second.
   However it doesn't stick as much when the engine is cold.
   
   I'm starting to think the piston rings are slightly worn. Any other ideas???
   I top it up once a month but it doesn't loose much oil at all to be fair.
   
   I'm using cheap oil atm as it's all I had but I'm about to give it a service with some proper stuff. Would this help?
   
   I've changed both temp sensors in the block and the throttle cable is fine. It's a mk1 vtr if it helps.
   
   
   Thanks
   
   
   
   Sam
2. waynaldo1 Frequent Poster Joined: Sep 2008 uk Posts: 609 2001 mk2 Silver Saxo VTS

   #2 26th April 2010, 08:37

   I dont know whats wrong matey, but my gf sisters boyfriend has a saxo and he sticks halfords oil in his car 10-40w fully sym, and he not had any problem so its not to do with te oil,
3. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

   #3 26th April 2010, 08:43

   10w-40 fully synth aint a bad oil to use in a saxo at all. Just because its halfrauds dont mean its bad.
   The oil i used was whatever i had lieing around the yard at the time (probely a cheap all purpose engine oil) As i checked it there and it was very low so i topped it up to get me home. But it is in need of a full oil change anyway.
   
   Forgot to mention - car is on 73k. Has induction kit and a cat back supersprint pipe on it. However my cat is about as usefull as a choco teapot at keeping emmisions down.
4. holdawayt Saxperience Post Whore Joined: Jan 2010 Stourbridge Posts: 7338 Nissan 200sx S14a

   #4 26th April 2010, 09:24

   Sounds exactly the same as mine buddy. (piston rings worn)
   
   possibly time for a new engine? not sure if these can be renewed or not or if it's worth it.
   
   Tom
5. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

   #5 26th April 2010, 09:49

   Nah, if its piston rings then its new engine time, especially with vtr lumps going very cheap nowadays. Going to keep running it as its been like it quite a while. If it gets worse ill have to source a new lump
6. Quick Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064

   #6 26th April 2010, 09:52

   If its on startup it could be valve stems.
7. user_40843 L-plater Joined: Jan 2010 Wishaw Posts: 75 Focus ST-2, Track VTS

   #7 26th April 2010, 09:53

   Sounds like piston rings pal.
   
   I work in a garage and we had one in the other week.
8. user_40843 L-plater Joined: Jan 2010 Wishaw Posts: 75 Focus ST-2, Track VTS

   #8 26th April 2010, 09:54

   Sorry, I meant valve stem and I cannot edit.
9. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

   #9 26th April 2010, 10:01

   Any idea the cost involved in replacing the valve stems? Id rather give that a go than replace the whole engine.
10. user_40843 L-plater Joined: Jan 2010 Wishaw Posts: 75 Focus ST-2, Track VTS

    #10 26th April 2010, 10:05

    Not expensive at all - the part is very cheap, we charge about £100 for the job doing including the parts.
11. holdawayt Saxperience Post Whore Joined: Jan 2010 Stourbridge Posts: 7338 Nissan 200sx S14a

    #11 26th April 2010, 10:13

    hmmmm might have to check these too. saves the hassle of the transplant.
12. streetwize Newbie Joined: Oct 2009 stafford Posts: 9 saxo furio. VTS conversion

    #12 26th April 2010, 10:42

    when my mates revs were staying up it was because of his accelorator cable. have u checked that ?
13. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

    #13 26th April 2010, 10:53

    Yeah, as said it first post. The cable is fine and smooth. Also replaced the temp sensors incase it was revving high thinking it was colder than it is.
14. fastroadkid69 Established Member Joined: Jul 2008 chesterfield. tupton Posts: 1501 saxo vtr escort rs

    #14 26th April 2010, 11:42

    ive its the to do with the valves, you will here it. listen at the rocker cover.
15. MR_N Saxperience Forum Bum Joined: Apr 2007 Fareham Posts: 3029 Saxo VTR

    #15 26th April 2010, 13:15

    Quote:

    Originally Posted by fastroadkid69 ive its the to do with the valves, you will here it. listen at the rocker cover.

    Dont quiet understand your english here. A noisey rocker cover can be down to the tappets needing adjusting. I can adjust them fine but its not them.
16. Matts-VTR Frequent Poster Joined: Jul 2009 Presteigne, Powys Posts: 736 96' clio 16v / 93' clio williams 1 / 00' saxo vtr.

    #16 4th May 2010, 08:19

    Sorry for the thread from the dead revival but mine does this but on a much bigger scale! im getting through about half a pint of oil every week so i only put cheapo shit in now.
    
    I do get through alot of miles though, added just under 3k in about a month so im not surprised but i still always warm the car up properly before giving it a few beans.
    
    Tbh mate i wouldnt bother with it untill it presents a real problem just always have a bit of oil handy in the boot. (i always have a bottle of oil, water, antifreeze and basic toolkit in the boot of mine)
17. Matt1-vts Regular Poster Joined: Mar 2010 Poplar, london Posts: 261

    #17 4th May 2010, 08:28

    If engines are hand built, how come you cant replace piston valves..
18. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

    #18 4th May 2010, 12:54

    i have a vtr engine that i need shifting if anyone is interested
19. Boyes Regular Poster Joined: Apr 2008 Sheffield Posts: 276 Peugeot 106 GTi, Clio 172

    #19 4th May 2010, 14:27

    Quote:

    Originally Posted by Matt1-vts If engines are hand built, how come you cant replace piston valves..

    
    Piston rings can be replaced, and so can the valves as for the piston valves......
20. warner88vts Infrequent Poster Joined: Nov 2009 thame Posts: 146 Citroen Saxo Vts...

    #20 4th May 2010, 17:48

    defo sounds like valve stem seals not much to buy just shit loads of work to do them
21. Matts-VTR Frequent Poster Joined: Jul 2009 Presteigne, Powys Posts: 736 96' clio 16v / 93' clio williams 1 / 00' saxo vtr.

    #21 6th May 2010, 07:58

    Quote:

    Originally Posted by Boyes Piston rings can be replaced, and so can the valves as for the piston valves......

    Bump! i want to know about these 'piston valves' also