Jump to content
SAU Community

New Pistons? Or Second Hand Bottom End?

Gareth-WilliamsR33
 Share

Recommended Posts

Gareth-WilliamsR33 Rookie

Gareth-WilliamsR33

Posted
Posted

Hey people im hoping for some help here, i took my skyline r33gtst to get minor work done and just its regular check up.. The mechanic told me he noticed the car was miss- firing, ( bare with me as im not all that knowledge based with cars) he put my hand up to a small pipe that was blowing out air in small bursts, then put my hand up to the exhaust.. I couldnt quite understand what he was on about, but basicaly told me one of my piston rings is cracked or broked meaning my car is running on 5 cylinders, not 6. He told me the engine has to be pulled out and needs new pistons... Im just wondering if theres an alternate explanation for what hes telling me is wrong, or is there a way i can test my car to get a 100% notibility with what the problem actualy is or if theres a problem at all, i personaly didnt know anything was wrong with my car before he told me it needs major work done, it runs beautifuly. So any feed back would be greatly appreciated, cheers

DAN00H Mentor

DAN00H

Posted
Posted

LOL - go to a different mechanic. if it doesn't misfire under boost or load, then it's unlikely there is an issue (especially if you haveen't noticed anytihng as the driver). too hard to diagnose anything like this over a keyboard...

does it blow smoke out of the oil filler if you remove while idling?

EeLeYe Mentor

EeLeYe

Posted
Posted

Does your car sound like a WRX? If so, then yes, you are running on 5 cyl. Otherwise it seems as though the mechanic may have misdiagnosed the problem; a problem that you never noticed beforehand - especially if you mentioned the car runs beautifully.

The small bursts of air have been associated with piston ring failure but as I mentioned above, the dead giveaway is the WRX sound (going from my experiences). I would take it to another mechanic (don't say anything about piston rings) or a friend who knows engines.

Gareth-WilliamsR33 Rookie

Gareth-WilliamsR33

Posted
  • Author
Posted

Whats the best way to notice if my car is miss firing? i dont exactly hoon around in the car all that much im a fairly casual driver, so if i put my foot down what sort of reaction should i be looking for? I havnt noticed any smoke coming out of it, ive parked it up somewhere secure and safe until i figure out whats wrong with it. Mechanic said if i continue to drive it around it will eventualy start spitting oil and cause more damage... Kinda annoying coz ive just had the head reconditioned due to the timing belt snapping which was a 3 grand operation, now he tells me the bottom needs doing with new pistons... I just wana make sure hes not pulling my leg coz i dont know a whole lot about cars.

Lazy-Bastard Grand Master

Lazy-Bastard

Posted
Posted

LOL - go to a different mechanic. if it doesn't misfire under boost or load, then it's unlikely there is an issue (especially if you haveen't noticed anytihng as the driver). too hard to diagnose anything like this over a keyboard...

does it blow smoke out of the oil filler if you remove while idling?

Remove the OIL filter while idling?!?!?!?

Did you mean the air filter?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Duncan's V37.......race car?

      By MBS206 · Posted

      Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • RP1421
      S15 Spec R

      By RP1421 · Posted

      As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • joshuaho96
      R32 GTS (RB20DE) Injectors Replacement

      By joshuaho96 · Posted

      I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...