Why does my Datsun 280ZX crank but not start, or not stay running?

Short answer: When a 280ZX cranks but won't fire, the first job is finding out what's missing when it fails: spark or fuel. One 280ZX Turbo owner who had spent heavily with two specialists was told to test both during a failure and check the under-hood fuses. If yours starts but won't stay running after years of sitting, even after a new pump, injectors and a cleaned tank, members suggested a tank that can't vent and the old-style air flow meter, whose vane must move freely.

Symptom: The engine cranks over but most of the time won't fire. Or after sitting for years, it starts but won't keep running, even after many new fuel parts.

What to check first

1. During a no-start, check for spark at a plug and fuel pressure at the same time.
2. Check the fuses and fusible links under the hood.
3. If it stalls, remove the gas cap. A rush of air means the tank isn't venting.
4. Check that the air flow meter flap moves smoothly with the engine off.
5. Do a compression check if spark and fuel are both there.

Likely causes

1. Missing spark or fuel during the failure. Members said the cause can't be found until you know which is missing.
2. Fuse or fusible link. Suggested for the intermittent no-start.
3. Blocked tank vent. Suggested for the car that sat for years.
4. Sticking air flow meter. The vane-type sensor tells the computer how much air is coming in.

What it usually costs

No owner posted prices.

Is it safe to keep driving?

A no-start isn't dangerous parked, but stalling in traffic is. Fix fuel leaks right away. Verify with a mechanic.

DIY or shop?

DIY for spark and fuel checks, fuses and the gas cap test. Air flow meter testing needs a manual or a specialist.

Recalls, bulletins and complaints in plain words

• Recalls: NHTSA's recall lookup returned an error for the Datsun 280ZX for 5 model-year queries on 2026-10-26, so we couldn't confirm recalls here. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
• Plain words: NHTSA's online lookup returned errors for these older Datsun model years, so we couldn't check recalls. A Nissan dealer can run your VIN.
• NHTSA complaints: 2 keyword-matched complaints for Datsun 280ZX 1979–1983 (of 4 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-26; keywords: no start, stall, dies, hard start, fuel, injection). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In 1982 Datsun 280ZXT not starting on Car Talk, a 280ZX Turbo cranked over but about 90% of the time wouldn't start, even after a tune-up, new battery and cables, a good fuel pressure test, and almost $2,000 at two Z specialists. Members said the key is to find out whether spark or fuel pressure is missing when it fails, suggested the under-hood fuses, and recommended a Z car forum.
• In 1983 Nissan 280ZX sat for 3-4 years on Car Talk, the owner replaced the fuel pump, pressure regulator, injectors and filter, cleaned the tank and changed the plugs, but the car would start and not stay running. Members suggested a tank venting problem (pop the cap when it stalls and listen for air rushing in) and the vane-type air flow meter.

Quick tip

Don't replace parts on a 280ZX until you've caught it failing with a spark tester and a fuel gauge. That alone would have saved one owner a lot of money.

Vehicle focus: 1979–1983 Datsun/Nissan 280ZX (2.8L six, including turbo).

Safety / mechanic note

Old fuel lines on these cars can leak near hot engine parts. Verify with a mechanic.