1990 Mazda RX-7 Fuel system Problems
- Complaints
- 2about this part
- Share
- 7%of 28 total for the year
- Median mileage
- 153,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 1990 Mazda RX-7, 7% of the 28 complaints for this model year. Where a mileage was given, the median is 153,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Under normal driving conditions, the pulsation damener on the primary fuel rail failed, spraying fuel over the entire engine bay, which resulted in a fire of the compartment, which was quickly extinguished via handheld fire extinguisher. The part was replaced, at a high cost, due to the fact that the whole fuel rail must be replaced to correct the problem.”
NHTSA complaint #10138372, filed 2005-10, 153,000 miles“Pusation dampner on primary fuel delivery rail diaphram failure. Gasoline leakage in large quantities right above hot engine. Very serious fire hazard.. Seems to be a common problem on RX-7's in general. Perhaps Mazda should have plaed the pd away from the engine. Excessive heat may have hardened diaphram to point of breakage. Fualty design.”
NHTSA complaint #764067, filed 2002-07Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 1994 | 4 | 22% |
| 1993 | 20 | 24% |
| 1991 | 5 | 23% |
| 1990 | 2 | 7% |
| 1989 | 1 | 3% |
| 1988 | 13 | 54% |
| 1987 | 32 | 63% |
| 1986 | 8 | 73% |
| 1984 | 2 | 40% |
Other parts of the 1990 Mazda RX-7
18 complaintsEngine cooling
4 complaintsBrakes
2 complaintsElectrical system
1 complaintsEquipment
1 complaintsTires
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 1990 Mazda RX-7
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology