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 angie2 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
84,375

littlehorn answered 17 years ago

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.

Mark helpful

migration_tommcmanis... answered 11 years ago

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 people found this helpful.
Mark helpful

Your Answer:

Related Questions

300ZX

Looking for a Used 300ZX in your area?

CarGurus has 5 nationwide 300ZX listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Nissan 300ZX Questions

CarGurus Experts

  • #1
    dandyoun
    Reputation
    410
  • #2
    Jamie Staples
    Reputation
    400
  • #3
    macevanscb
    Reputation
    350
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Corvette
28 Great Deals out of 1,058 listings starting at $15,871
Used Nissan Skyline
1 listing
Used Toyota Supra
62 listings starting at $51,977
Used Ford Mustang
65 Great Deals out of 1,258 listings starting at $4,995
Used Dodge Charger
39 Great Deals out of 645 listings starting at $4,888
Used Chevrolet Camaro
16 Great Deals out of 307 listings starting at $9,995
Used Ford F-150
321 Great Deals out of 15,103 listings starting at $1,712
Used Honda Civic
176 Great Deals out of 3,690 listings starting at $1,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.