Help diagnosing engine woes - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

weshole · 05-30-2009, 01:55 PM

It started a few days ago. Noticed a ticking from the top of engine. Definitely sounds like a lifter. Have not been able to pinpoint which one. Figured I need to replace the lifters or at the very least remove them and pump them up. Then while driving, it felt like there was something restricting it under acceleration and sometimes would come out of it and pull just fine. Now, (every time) under full hard boost it pops, cracks, and backfires. A At part throttle it seem to be fine. It idles and starts up just fine as well. ANY IDEAS where I should start? Car is a 92 s13 with a redtop sr. t28 @ 10psi, starion fmic, 3" turbo back.

s14_mike · 05-30-2009, 02:11 PM

Does the ticking happen on cold start up and then go away after the engine idles for a few minutes? or is it constantly there?

RACETUNE · 05-30-2009, 02:18 PM

Quote:

Originally Posted by weshole

It started a few days ago. Noticed a ticking from the top of engine. Definitely sounds like a lifter. Have not been able to pinpoint which one. Figured I need to replace the lifters or at the very least remove them and pump them up. Then while driving, it felt like there was something restricting it under acceleration and sometimes would come out of it and pull just fine. Now, (every time) under full hard boost it pops, cracks, and backfires. A At part throttle it seem to be fine. It idles and starts up just fine as well. ANY IDEAS where I should start? Car is a 92 s13 with a redtop sr. t28 @ 10psi, starion fmic, 3" turbo back.

What is your oil pressure?

weshole · 05-30-2009, 02:57 PM

Found it guys. One of the spark plugs was missing the ground electrode. Seems to me that the spark plug is a little on the warm side for heat range for what Im running for boost. You guys tell me. its an NGK iridium BKR5EIX-11. I figured I should be running 6's at 10psi. Waht do you guys think? I got the car like this but there was 1 spare plug in the center counsel so that has me thinkin this has happened before.

s14_mike · 05-30-2009, 03:42 PM

If you're gonna change one just change them all. If i can remember correctly I'm using BKR7E-11 and so far so good.

landins13 · 05-30-2009, 03:50 PM

i use cheap ass copper plugs because i foul out iridiums, they work perfectly fine

weshole · 05-30-2009, 06:33 PM

Quote:

Originally Posted by s14_mike

If you're gonna change one just change them all. If i can remember correctly I'm using BKR7E-11 and so far so good.

I def plan on it.

05-30-2009, 01:55 PM	#1
weshole Zilvia Member Join Date: Apr 2007 Location: Minnesota Age: 53 Posts: 188 Trader Rating: (2) Feedback Score: 2 reviews	Help diagnosing engine woes It started a few days ago. Noticed a ticking from the top of engine. Definitely sounds like a lifter. Have not been able to pinpoint which one. Figured I need to replace the lifters or at the very least remove them and pump them up. Then while driving, it felt like there was something restricting it under acceleration and sometimes would come out of it and pull just fine. Now, (every time) under full hard boost it pops, cracks, and backfires. A At part throttle it seem to be fine. It idles and starts up just fine as well. ANY IDEAS where I should start? Car is a 92 s13 with a redtop sr. t28 @ 10psi, starion fmic, 3" turbo back. __________________

05-30-2009, 02:57 PM	#4
weshole Zilvia Member Join Date: Apr 2007 Location: Minnesota Age: 53 Posts: 188 Trader Rating: (2) Feedback Score: 2 reviews	Found it guys. One of the spark plugs was missing the ground electrode. Seems to me that the spark plug is a little on the warm side for heat range for what Im running for boost. You guys tell me. its an NGK iridium BKR5EIX-11. I figured I should be running 6's at 10psi. Waht do you guys think? I got the car like this but there was 1 spare plug in the center counsel so that has me thinkin this has happened before. __________________

05-30-2009, 03:50 PM	#6
landins13 Zilvia Addict Join Date: Jan 2008 Location: Baltimore Posts: 986 Trader Rating: (3) Feedback Score: 3 reviews	i use cheap ass copper plugs because i foul out iridiums, they work perfectly fine __________________ NO HANDS IN PANTS!!

05-30-2009, 02:11 PM	#2
s14_mike Zilvia Junkie Join Date: May 2007 Location: 626/Monterey Park Age: 37 Posts: 416 Trader Rating: (9) Feedback Score: 9 reviews	Does the ticking happen on cold start up and then go away after the engine idles for a few minutes? or is it constantly there?

05-30-2009, 03:42 PM	#5
s14_mike Zilvia Junkie Join Date: May 2007 Location: 626/Monterey Park Age: 37 Posts: 416 Trader Rating: (9) Feedback Score: 9 reviews	If you're gonna change one just change them all. If i can remember correctly I'm using BKR7E-11 and so far so good.