my 1988 300 zx just got a tune up done and now it's pumping too much gas, what can the problem be

30

Asked by Aug 23, 2007 at 03:52 PM about the 1988 Nissan 300ZX

Question type: Maintenance & Repair

too much fuel pumping out, just gave it new cap rotor spark plugs and cables

3 Answers

42,935

If it is carbureted, your problem could lie in the float bowl system, or internal to the carburetor. If fuel injected, the fuel pressure regulator could be bad, or perhaps an injector has failed. Either way, the tune-up should not be related to the problem unless something was accidentally damaged while it was performed.

EFI . And I have this same problem as soon as I have an answer I will put it up for everyone as its had me stumped.

Check the connection at the throttle position sensor. Connections should be bright silver, if they are green and mossy looking plug connector ,and tps will need replaced. Per Nissan. The bad connection tricks the ecm into believing its at full throttle,thus flooding. Fuel pressure regulator may be compromised as well it is located on the front of the engine just left of the distributor. Start the car remove the small vacuum line from the top of it if fuel leaks out regulator is toast. 65.00 plus tax auto zone. Hope that helps

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • 1984 Nissan 300 ZX clutch problems 16 answers

    Clutch pedal will not come back up from floor, unless i pull it up manually. With car running and foot down on pedal, cannot engage gears. I can see the slave cyclinder move only very slightly when p...

    1984 Nissan 300ZX

    -

    Maintenance & Repair

  • Fuel Injector issue 4 answers

    1988 300 ZX, technical issue: The car as approximately 270,000 miles on it the car runs great and uses little oil between oil changes that are ever 5000 miles, I have used synthetic oil in it for the ...

    1988 Nissan 300ZX

    -

    Maintenance & Repair

  • My 1990 twin tubo Nissan ZX run rough when idling have to keep foot on gas pedal! What is wrong. 5 answers

    Run rough when idleing have to push on gas pedal.

    1990 Nissan 300ZX 2 Dr Turbo Hatchback

    -

    Maintenance & Repair

  • Nissan 1984 300 ZX. Dash gauges - Digital 11 answers

    Okay. Have quite a number of items on the dash gauges that don't work. WHat DOES work all the time is the Tach. Speedo works when it wants to. When it's not - it reads 0. Fuel gauge doesn't work at...

    1984 Nissan 300ZX

    -

    Maintenance & Repair

  • 1988 Nissan Pickup won't start 8 answers

    I have a 1988 Nissan 4X4 pickup that is not firing. I just put a new distributor & coil on it & it still won't start. Any suggestions?

    1988 Nissan Pickup

    -

    Maintenance & Repair

300ZX

Looking for a Used 300ZX in your area?

CarGurus has 129 nationwide 300ZX listings starting at $3,995.

ZIP:

Search Nissan 300ZX Questions

Nissan 300ZX Experts

#1 Tom Demyan
Tom Demyan
Reputation 440
#2 Jamie Staples
Jamie Staples
Reputation 290
#3 dandyoun
dandyoun
Reputation 240
View All

Related Models For Sale

Used Nissan 240SX
24 listings
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Toyota Supra
43 listings starting at $63,800
Used Chevrolet Camaro
225 Great Deals out of 30,943 listings starting at $1,217
Used Chevrolet Corvette
120 Great Deals out of 20,753 listings starting at $3,000
Used BMW 3 Series
974 Great Deals out of 31,729 listings starting at $1,000
Used Nissan 200SX
14 listings
Used BMW M3
45 Great Deals out of 1,517 listings starting at $5,800

Used Cars For Sale

1996 Nissan 300ZX For Sale
7 listings starting at $3,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.