Idle Hunting Problem. No Fuel Filter On R33 The Problem?.....

[Bracca]

So my skyline apparently does not have a fuel filter and it looks like it has been modded to bypass a filter. It has been giving me idle problems over the past few months when the engine gets warm and have yet found a solution to this day... so i was wondering could this be the problem?? i cleaned the throttle body, cleaned the idle sensor, and cleaned the map flow sensor as well as re-soldering the joints inside & coil packs are good. Any advice would be appreciated guys. May need a oil change but have not gotten around to it.

It’s an r33 s2 1996 looks like it had a engine swap for a s1 engine no idea what year though.

[Got a Pulsar]

Does it have stock ECU? Try an ECU reset and see if that helps.

No fuel filter sounds a little strange. Might wanna put some injector cleaner through it too.

[Moodles2]

Might have bypassed the fuel dampener

[Bracca]

It looks like the stock ecu to the engine (Rb25det) but it was hard wired to the original wire loom in the car instead of changing the whole thing out. Ill get some injector cleaner and throw it in my tank it and try a ecu reset over the weekend. It seems to mostly give trouble when its low on gas after i filled the tank the other day its been fine to drive home and work but its only a 5min trip so ill have to try a little longer trip after the weekend.

[Moodles2]

Injector cleaner is a waste of money, does nothing. If your having trouble with 1/4 left in the tank, then you might have an aftermarket fuel pump (walbro, bosch etc), they rarely get installed correctly and this is what always happens.

[ARTZ]

Dw...

[Burrieddreamz]

Same Scenario with my car! but no probs with idle

I got s2 type m r33 and engine i just got put in had only 88K on clock ( straight from the half cut) its a S1 engine had to do all the loom changes , engine etc etc. took abt 6 weeks to complete!

should i put a fuel filter or just leave it ?