fuel problem

hey guys i have developed a fuel problem in my 1989 z32 300zx tt for a starters it uses a lot fuel. always smells like fuel and lately blowing a lot of black smoke at idel but not every time i.m at idel and when it is blowing smoke it doesnt want to rev. any ideas would help.

 

Here's your quick solution:




But seriously, have a search around the forum. Here are 2 places to start, from the tech section.

http://www.pexcom.com.au/z32cms/e107_plugins/content/content.php?content.373

http://www.pexcom.com.au/z32cms/e107_plugins/content/content.php?content.365

 

They should be banned

 

at list in AU

 

Plug into conzult for error codes. Could be O2 sensors, Knock sensor, AFM, Bad injectors...

Well, could be a million things...

What other symptoms does your z have?

 

starting too not idel some times and thats about it

any1 in warwick QLD have conzult??

 

have you done a PRVR solenoid bypass?
look in the tech section.

 

not yet will do it tonight.

 

Mate if you can smell fuel, you have a fuel leak. That's a given.

Whether it be from your filler cap, your fuel pump, your engine bay, from under the car, if you can smell fuel, you have a leak.

That would be my first point of inspection if I were you, bad things can happen from fuel leaks no matter how small!

 

cant seem too find any leaks

 

Go around and tighten every fuel hose you can find, airstyle is right, if you can smell fuel you've got a leak.
if the hose looks old go get some new gates EFI hose cut to size and replace (don't forget to depressurise the system first.)

 

Process of elimination...

Refer tech section:

Check IACV valve and associated hoses (broken/split hoses? Bad connectors?)
Check Plugs - When u say it doesnt idle well, does it missfire?
Check 02's (Conzult or datascan)
Knock sensor (Conzult) (Code 34)
PRVR delete... (Why not?)
Boost leak test. (Might have a massive vac leak)

Failing all that, plenum pull, replace all fuel lines and hoses, new injector insultators, o-rings etc...

Ahh bugger it, pull the engine! Bigger turbos! Bigger Injectors! Bigger Cams! Forged internals! Leave no part un-upgraded! Simmo style

First point of call is Conzult tho. Get a cable! Got one here for $50+$10 express post!

 

ok prvr delete done and replaced 02's. adt put new plugs in so far. still no change will keep going hopfully do a boost leak test tonight

 

Check your fuel reg.

Pull the vac line off and see if theres any fuel coming out. If there is, its fubar.

Could be spark related too? If one cylinder is not firing hence bad idle and petrol smell(missing)

Check coil pack connectors, Change PTU if Series 1...

 

fubar?

 

have u checked if you have a jap tune in your ecu??? i had a veilside rom in mine 12k rev limiter and rich as a dog when it first came over

 

pretty sure its standerd

 

pretty sure??? open your ecu up

 

ahaha

FUBAR= Fooked up beyond all recognition

 

got ya