pressure relief valve (POV) popping??? need help!?!
#1
pressure relief valve (POV) popping??? need help!?!
ok so i was driving my 1983 280zx turbo and downshifted to speed up... and then all of a sudden sounded like tons of backfiring and stuff. i see the pressure relief valve next to the EGR is popping and backfiring out of airbox i think? i can get it started by pumping the gas.... then by hitting the accelerator i get the pop off valve going off and backfiring.
when i drive it i have nooooo power hardly when i hit the gas just popping noise's but when i hit the throttle slow it speeds up. OH and when i downshift no popping just rpms rev with no problems, so engine is fine thank goodness lol.
so i wonder what i screwed up. plz help
when i drive it i have nooooo power hardly when i hit the gas just popping noise's but when i hit the throttle slow it speeds up. OH and when i downshift no popping just rpms rev with no problems, so engine is fine thank goodness lol.
so i wonder what i screwed up. plz help
#4
#5
#6
So it's backfiring out the intake, which means it's running lean. I suggest checking your CHTS & AFM & connections. Also, I suggest pulling your spark plugs & reading the tips to see if one cylinder isn't firing.
#7
#9
#17
I got a call from the mechanic today, it was a rocker that fell off
Didn't break anything, still had that rough idle, so there looking into that as well, might have them fix it all up while its in the shop.
Didn't break anything, still had that rough idle, so there looking into that as well, might have them fix it all up while its in the shop.
#18
Rocker Arm fell off
ok i was driving and my rocker fell off (playing to hard)... anyways i took the valve cover off and one of the rockers in the middle was sitting off nothing bent just pushed off. soooo i was wondering how do i get that back on the cam guide. do i have to take off camshaft? or can i slip it on again?
ty in advance
ty in advance
#19
Merged with your previous thread... in which you stated the shop found the rocker problem... so... did they fix it and it fell off again? Or is this the same problem?
Also, time to break open that HAYNES manual or FSM.
Click: https://www.zdriver.com/forums/240z-280zxt-s30-s130-tech-tips-275/aftermarket-cams-cam-removal-installation-pics-19939/
Also, time to break open that HAYNES manual or FSM.
Click: https://www.zdriver.com/forums/240z-280zxt-s30-s130-tech-tips-275/aftermarket-cams-cam-removal-installation-pics-19939/
#20
Merged with your previous thread... in which you stated the shop found the rocker problem... so... did they fix it and it fell off again? Or is this the same problem?
Also, time to break open that HAYNES manual or FSM.
Click: https://www.zdriver.com/forums/showthread.php?t=19939
Also, time to break open that HAYNES manual or FSM.
Click: https://www.zdriver.com/forums/showthread.php?t=19939
#22
Dude... did you look at the link I posted? Do you have a Haynes manual?
You can download the FSM from www.xenons130.com/reference and it has detailed steps on rocker R&R.
You can download the FSM from www.xenons130.com/reference and it has detailed steps on rocker R&R.
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