Fuel Problems??
05-03-12, 08:42 PM
#1
Junior Member
Thread Starter
Fuel Problems??
I have owned a 1988 RX-7 convertible for a day...and it is great, when it starts.
I have had the following issues so far:
1. It just sits and cranks, sometimes, the engine can be cold or hot. I do get a heavy odor of gasoline when it does not start. I am guessing I may have leaky or internally worn fuel injectors??
2. It hesitates at normal throttle pressure, kind of surges ( the car, not RPM's). When you are at normal throttle pressure and remove your foot from the gas it sounds "off", maybe like it is not getting any gas. I had an issue with an old ford probe, some house paint accidentally found its way into the gas tank and when I would be driving at any random point it would surge because no fuel was making it to the engine. Again, could this be the injectors?? Or is this more of timing issue??
3. I took the car all the way to about 7,000 RPM's and shifted to 2nd with a bit of speed and well, rough shifting. There was a very loud clunk from underneath as I shifted and the clutch stayed on the floor. it came back up after I shut it off and played with the pedal for a minute. I checked the trans mount and it seems ok. Could this be the clutch or its components simply getting worn out?? Does it need a new transmission?? Any ideas will be great on this. under normal driving it shifts great and feels great.
4. When I initially start the car after it has been parked overnight or allowed to cool completely, the RPM's surge up and down (about from 1,000 to 2,000 back and forth), this goes away after the engine heats up for about 5 minutes of idling. I was told by the previous owner that it was something to do with the A/C??? Again, any ideas would be greatly appreciated.
What I have done thus far is order a new Throttle Position Sensor and a new fuel filter. I want to wait to get the new fuel injectors until I receive some feedback. Any and all comments are welcome. If you have had any of these problems and know how to correct them, PLEASE write me.
Again, this is a 1988 Mazda RX-7 13B S4, non-turbo.
I have had the following issues so far:
1. It just sits and cranks, sometimes, the engine can be cold or hot. I do get a heavy odor of gasoline when it does not start. I am guessing I may have leaky or internally worn fuel injectors??
2. It hesitates at normal throttle pressure, kind of surges ( the car, not RPM's). When you are at normal throttle pressure and remove your foot from the gas it sounds "off", maybe like it is not getting any gas. I had an issue with an old ford probe, some house paint accidentally found its way into the gas tank and when I would be driving at any random point it would surge because no fuel was making it to the engine. Again, could this be the injectors?? Or is this more of timing issue??
3. I took the car all the way to about 7,000 RPM's and shifted to 2nd with a bit of speed and well, rough shifting. There was a very loud clunk from underneath as I shifted and the clutch stayed on the floor. it came back up after I shut it off and played with the pedal for a minute. I checked the trans mount and it seems ok. Could this be the clutch or its components simply getting worn out?? Does it need a new transmission?? Any ideas will be great on this. under normal driving it shifts great and feels great.
4. When I initially start the car after it has been parked overnight or allowed to cool completely, the RPM's surge up and down (about from 1,000 to 2,000 back and forth), this goes away after the engine heats up for about 5 minutes of idling. I was told by the previous owner that it was something to do with the A/C??? Again, any ideas would be greatly appreciated.
What I have done thus far is order a new Throttle Position Sensor and a new fuel filter. I want to wait to get the new fuel injectors until I receive some feedback. Any and all comments are welcome. If you have had any of these problems and know how to correct them, PLEASE write me.
Again, this is a 1988 Mazda RX-7 13B S4, non-turbo.
05-05-12, 04:42 PM
#2
Junior Member
Thread Starter
I got the new TPS today and it did solve everything except for issue 3. Still waiting on that as now, more than ever, I'd like to give this thing a "spirited" drive =)
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trickster
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