1989 S13 Auto:Engine Power issue - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DJ Silent · 12-13-2008, 04:23 PM

Hey guys,
I just bought a 1989 240sx coupe with a silvia front end and it needs some work. It's auto(will swap 5 speed in a few weeks, looking for 5 speed swap parts) and was idling wrong at the time. Adjusted the idle on the ecu and it is idling pretty well but there is absolutely no power when I hit the gas, I was able to get it to go to 65 on the highway but it was a strain getting it. Any ideas? All the injectors are going and I am getting spark on all 4 I am thinking of sea foaming it since it has been sitting for a while. I think the ECU could be bad making the timing off.
-Alex

**mrmephistopheles** · 12-13-2008, 09:04 PM

Quote:

Originally Posted by DJ Silent

Hey guys,
1989 240sx auto
bad idle
Adjusted the idle on the ecu and it is idling pretty well
but there is absolutely no power when I hit the gas, I was able to get it to go to 65 on the highway but it was a strain getting it. Any ideas?
All the injectors are going
spark on all 4
I am thinking of sea foaming it
I think the ECU could be bad making the timing off.

Sorry had to clear up some crap so I could think more clearly.

Bad idle is going to be cause by timing.
You adjust timing at the distributor, not via the ECU.
Use a timing light to set the timing correctly.
Also make sure that you've got good compression across your cylinders as well.

DJ Silent · 12-14-2008, 01:28 AM

Quote:

Originally Posted by mrmephistopheles

Sorry had to clear up some crap so I could think more clearly.

Bad idle is going to be cause by timing.
You adjust timing at the distributor, not via the ECU.
Use a timing light to set the timing correctly.
Also make sure that you've got good compression across your cylinders as well.

Will definitley do thanks. Yeah I know nothing of engines lol. I have done transmission suspension and wiring but I know crap about engines, gotta learn sometime I guess!

DJ Silent · 01-23-2009, 02:02 AM

Ok so I did a compression check on it and I think I found the issue. From front to back ( don't know cylinder numbers) it is 100 - 100 - 110 - 108. So it seems the headgasket is screwed. I am not sure if that would explain why it is running so poorly though. If anyone has any ideas post em up I will post a video later on tomorrow of it running.

12-13-2008, 04:23 PM	#1
DJ Silent Zilvia Member Join Date: Jun 2008 Location: San Diego, CA Age: 31 Posts: 263 Trader Rating: (1) Feedback Score: 1 reviews	1989 S13 Auto:Engine Power issue Hey guys, I just bought a 1989 240sx coupe with a silvia front end and it needs some work. It's auto(will swap 5 speed in a few weeks, looking for 5 speed swap parts) and was idling wrong at the time. Adjusted the idle on the ecu and it is idling pretty well but there is absolutely no power when I hit the gas, I was able to get it to go to 65 on the highway but it was a strain getting it. Any ideas? All the injectors are going and I am getting spark on all 4 I am thinking of sea foaming it since it has been sitting for a while. I think the ECU could be bad making the timing off. -Alex

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01-23-2009, 02:02 AM	#4
DJ Silent Zilvia Member Join Date: Jun 2008 Location: San Diego, CA Age: 31 Posts: 263 Trader Rating: (1) Feedback Score: 1 reviews	Ok so I did a compression check on it and I think I found the issue. From front to back ( don't know cylinder numbers) it is 100 - 100 - 110 - 108. So it seems the headgasket is screwed. I am not sure if that would explain why it is running so poorly though. If anyone has any ideas post em up I will post a video later on tomorrow of it running.