Jump to content
SAU Community

Weird Problem After Timing Belt Change!

Psymon

By Psymon,
in General Maintenance

 Share

Recommended Posts

Psymon Mentor

Psymon

Posted
Posted

Just finished changing my timing belt and pulleys. Started up the car and came across a weird problem. The car wont rev. It starts and idles fine, but when you give it any throttle, even WOT it doesn't rev at all. Everything else seems to be fine. CAS was put back in exactly the same place it was when i pulled it off, also double checked its plugged in. Any ideas what's happened?

RANDY Veteran

RANDY

Posted
Posted

doesn't rev like the accelerator pedal is not connected? Or tries to and can't?

Did you line up the belt markings with the marking on the cover etc etc? I don't know if putting the intake and exhaust cams out of whack would produce that effect or not...

Psymon Mentor

Psymon

Posted
  • Author
Posted
doesn't rev like the accelerator pedal is not connected? Or tries to and can't?

Did you line up the belt markings with the marking on the cover etc etc? I don't know if putting the intake and exhaust cams out of whack would produce that effect or not...

Tries to and can't. The belt was put on with all the markings and everything lined up properly.

chrissso Proficient

chrissso

Posted
Posted

how high will it rev when you try?

1k, 2k?

maybe one of the sensors is not plugged in. tps, afm, etc. check all connections.

make sure all your intercooler pipes are conntected and there are no leaks..

Psymon Mentor

Psymon

Posted
  • Author
Posted (edited)

It would only rev to 1k rpm tops. I didn't think intake cam being only 1 tooth out would make that much diference?

Checked all plugs on CAS, AFM and TPS. I was thinking along the lines of a bodgy TPS as there doesn't seem to be any reaction to throttle movements at all. I might run diagnostics when i get home from work and see if there's any codes.

Edited by Psymon
Psymon Mentor

Psymon

Posted
  • Author
Posted

Just ran diagnostics. Only code 55 which i'm pretty sure is because it used to be auto and i did a manual conversion so the computer thinks the auto isn't responding. So this would pretty much rule out all sensors wouldn't it?

Psymon Mentor

Psymon

Posted
  • Author
Posted

Some more progress. Twisted the cas about 5mm left and it seems to be behaving a bit better now. Actually getting it to rev now but still seems a bit dodgy. Should i grab a timing light and check the timing?

Psymon Mentor

Psymon

Posted
  • Author
Posted

Alrighty. Let it warm up and disconnected the AAC valve as per workshop manual's instructions, then checked the timing wtih a timing light. With the CAS in the position i had it to rev properly it was advanced to buggery (just about going off the scale of marks on the harmonic balancer) so i put it back to the original position and it was still advanced which was 1st mark past 0 degrees (which i'm guessing is 5 degrees??).

This is really frustrating the crap out of me. What the hell is going on with my car?!?

DRFT Rookie

DRFT

Posted
Posted
whip the covers off the front and wind the engine over and see if your marks are still lined up, just to rule out any chance you have the belt out a tooth

Yes do this.

Sounds like your cam timing is out. Not a good idea to run the engine either as you could have pistons hitting valves if your not careful.

RANDY Veteran

RANDY

Posted
Posted

So.. markings on the engine-part, markings on the belt, markings on the cam gears... right?

Make sure you put your CAS back to where it was. there should be a paint marking... about 15 degrees before top dead centre? I think it's about that for R33's?

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

    • Ozdavroz
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By Ozdavroz 路 Posted

      Haha nice, my kids are the same two older boys say cars are boring while younger girls like them. My 1.5yo daughter watches D1GP on YouTube with me, holding a toy plate for steering wheel and making brmm brmm noises
    • Dose Pipe Sutututu
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By Dose Pipe Sutututu 路 Posted

      Took the car out to see if it still starts, sure does. Daughter wanted to for a spin too, she loves it when it doses, also cries when we come home and try to take her out of the baby seat 馃ゲ  I actually put the seat in for her brother, but he absolutely hates the shitbox. Anyhow, so after looking at real boats, and transoms, bait tanks etc. and scupper valves attached to them, I came up with ideas to improve the catch can. The primary goal was to stop the interior smelling like vented catch can shit when the windows are down OR when the HVAC is not recirculated. My catch can has a sump drain/feed at the bottom, 2x cam cover inlets, 1x outlet back to the intake pipe and 1x vent at the top. The initial theory was at idle, and off boost there would be just enough suction from the intake pipe (pre turbo) to pull back any smelly shit from the catch can before it could escape out of the vent (which does have 1x layer of foam and a fine mesh screen on top). It kind of works, however on hot days, the motor is breathing more than the suction provided from the intake pipe (pre turbo) and there's a bit of vapours escaping (not a bit amount, but enough to piss me off). I could have just sealed off the vent, however it would mean each time I take it to the track or decide to drive it with a bit of enthusiasm, I would need to remove the seal. To address this, using scupper valve idea, I used a 3mm sheet of rubber and cut essentially a valve that requires a bit of pressure to crack open and vent. Took the shit box for a drive today, came back and parked the car. No heavy stench, great success 鈽猴笍 I still would swap for a F80 LCI or W204 2012+ C63 AMG, if anyone is keen 馃槄
    • silviaz
      Steps to DIY sanding car back ready for respray....

      By silviaz 路 Posted

      Will do thanks.
    • soviet_merlin
      [Fuel pump] Is upgraded bulk head connectors or relay mod needed for fuel pump upgrade?

      By soviet_merlin 路 Posted

      I'm with Kinkstaah on this one. Do it once, do it right. So much better for your mental health. The sneaky thing about the fuel pump wiring is that it will work perfectly fine for the longest time. Until that one moment when it decides to shit the bed. And it's not worth the paranoia from not trusting the car anymore. At least other mechanical issues announce themselves by developing some noise or other warning. If you have the funds, I'd suggest to go with a good kit like Frenchys and get the work done by a trustworthy shop. No regrets there. The only downside to the Frenchys kit on the Stagea/R32 GTR is that their fuel level sender is not on point. But looks like the R33 kit maintains the factory sender so should not be an issue. This is what the botched setup on my Stagea looked like before it stopped working. It had melted its way quite a distance down. Glad it didn't burn down the car.   Some links I came across when I looked for solutions: Radium sells a DIY wiring kit that looks promising. I didn't buy it though, I let my workshop decide on wiring. https://www.prospeedracing.com.au/products/radium-diy-fuel-pump-hard-wiring-kit-17-0031 https://www.radiumauto.com/DIY-Fuel-Pump-Wiring-Kit-P368.aspx   You can also get cheap replacements for the locking ring depending on how mangled it looks: https://www.kudosmotorsports.com/Nissan-17343-79900-Fuel-Tank-Outlet-Locking-Ring-for-Nissan-S14-S15-BNR32-R33-R34-AWC34 There are tools for unscrewing it as well so you don't have to abuse it with a screwdriver and mallet. The Frenchys one is expensive but I'm sure there are cheaper ones.
    • pez5
      ST Coilovers by KW SUIT Nissan Z33 Infinity G35 Coupe

      By pez5 路 Posted

      EOFY SALE Dropped to $1000.00
脳
脳
  • Create New...