Hello all –

I have a 98 SH 5Gen t03 prelude that I just purchased from an auction – engine seemed to be in good condition – When I got it the boost controller had been ripped out of it – So it had a lot of boost spikes - I put on a turbonetics manual boost controller and that helped out a lot. However now – I think I’m having an ignition or fuel issue? - The car has a Vortech inline fuel pump and fuel regulator (12:1 I would assume)– S-AFC – and a boost retard dial. I don’t think there after market injectors? And I know it’s not an aftermarket fuel rail.

This is what I know – In the morning when the car is fresh – I start it and it sounds like its misfiring -then it throws a 71 code –which is the cylinder one or four misfire I believe. I checked that I am getting spark – when I pull the plug wire off the last cylinder ((Furthest one to the right) then engine makes no changes in the way it sounds or runs? Which I know is not right. It should stutter a little and sound like I lost spark in the cylinder- So…. After a while of warming up – it returns to normal and all sounds well and runs well – This only happens when it sits for a long period of time? Another thing I notice is that it will randomly not idol correct - it will rev up to 1500 – then drop to 1000 – and back and forth it goes.


I am very new to a force inducted h22 motor in the 5gen ludes – I do know a lot about a Toyota Supra TT motor and single turbo swaps, and its mechanics - so I know the basic concepts here, I would like to talk to someone that has a 5 gen turbo lude or anyone that might be able to help out that can pass along some knowledge –


Code 71,72,73,74

Misfire Detected -
· Cylinder 1
· Cylinder 2
· Cylinder 3
· Cylinder 4

· Ignition System
· Fuel Supply System
· EGR System
· IAC Valve
· Contaminated Fuel
· Lack of Fuel
· Valve Clearance
· Fuel Injector Circuit
· Low Compression


Email: ericlozano@comcast.net
AIM - onesiksupra

 

Maybe lean miss or injector cutting out. Have you done a compression test to check condition of engine?

 

Not yet - Probably this week - hmmm ?