what to do to make rx-8 more fuel efficient ?
#26
Check to make sure that the fuel pump outlet is not cracked and leaking gasoline (it was on my 2004). Also check for vacuum leaks; the three black plastic 1/4" fittings on the intake bellows is a good place to start.
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ThomG97 (05-16-2023)
#27
Yeah, sorry OP and club members. I saw the thread title and instead of reading through his post I just assumed it was another "why my RX-8 no get good mpgs" type of thing and quick replied. Newbie mistake. 7 miles per gallon is a problem, even for an '8.
#28
Not sure if this is a dumb question but does that help these out alot and is it safe to seafoam the rotory?
I just got an RX-8 and it feels like it should pull alot harder... feels like it wants to go faster but it like its hold its self back. i plan to check the plugs maybe give it a tune up tomorrow and see how she performs then
I just got an RX-8 and it feels like it should pull alot harder... feels like it wants to go faster but it like its hold its self back. i plan to check the plugs maybe give it a tune up tomorrow and see how she performs then
#29
Not sure if this is a dumb question but does that help these out alot and is it safe to seafoam the rotory?
I just got an RX-8 and it feels like it should pull alot harder... feels like it wants to go faster but it like its hold its self back. i plan to check the plugs maybe give it a tune up tomorrow and see how she performs then
I just got an RX-8 and it feels like it should pull alot harder... feels like it wants to go faster but it like its hold its self back. i plan to check the plugs maybe give it a tune up tomorrow and see how she performs then
Anyway, sounds like you recently bought your car.
Chances are you should go through all the threads aimed at new owners of used cars, and go through the list of items to help bring your car up to spec in regards to knowing that you have a properly working car.
BC.
#30
OP, didn't read the whole thread yet, but it looks like your there's something wrong with your car. I don't know how you drive it but 3 kpl is very low, even for this car.
Also check your brakes to see that they haven't seized up.
Don't forget to check for gold bullions hidden in the trunk, and always fill up with SUPER UNIQUE.
Also check your brakes to see that they haven't seized up.
Don't forget to check for gold bullions hidden in the trunk, and always fill up with SUPER UNIQUE.
#31
Red...lots of people here have an opinion bout it and I had some hesitation and used it and the hesitation went away..I also got a little better mpg for that fill up I usually get a consistent 18.7 but ended up with 19.5
#33
thanks everyone ... nothing is perfect when you are buying a recondition car , we need to make it perfect as we want ... thanks to all who suggests me ... I will definitely try to make my car perfect again .
#34
MAZDA RX-8 2004 super poor GAS MILEAGE
I paid $4,000 for my friends 2004 MAZDA RX-8 and have put an additional $1,500 into it including alot of VACUUM and ECG sensores...I am getting approximately 10 mpg with the
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
#35
Coils/plugs/wires $310 + shipping (bottom of page)
Air Filter $23.50 + shipping
Solenoids $22.80 each + shpiping
(assuming they are referring to the 3 vacuum solenoids on the back of the UIM. I've used these on my '8 and they work perfectly.)
Total: ~$400 + shipping.
All of these are relatively easy items to do that don't require anything more special than a basic mechanic's toolkit from Horrible Freight.
Total with tools: $531.90 + shipping
While you're at it, you should get a and a $10 phone app so you can pull data from the car like fuel trims, MAF rate, AFR, coolant temp. All this stuff makes troubleshooting easier.
Air Filter $23.50 + shipping
Solenoids $22.80 each + shpiping
(assuming they are referring to the 3 vacuum solenoids on the back of the UIM. I've used these on my '8 and they work perfectly.)
Total: ~$400 + shipping.
All of these are relatively easy items to do that don't require anything more special than a basic mechanic's toolkit from Horrible Freight.
Total with tools: $531.90 + shipping
While you're at it, you should get a and a $10 phone app so you can pull data from the car like fuel trims, MAF rate, AFR, coolant temp. All this stuff makes troubleshooting easier.
Last edited by NotAPreppie; 01-12-2018 at 07:57 AM.
#36
I paid $4,000 for my friends 2004 MAZDA RX-8 and have put an additional $1,500 into it including alot of VACUUM and ECG sensores...I am getting approximately 10 mpg with the
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
#37
I paid $4,000 for my friends 2004 MAZDA RX-8 and have put an additional $1,500 into it including alot of VACUUM and ECG sensores...I am getting approximately 10 mpg with the
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
6 speed manual...the dealer wants $990 for a tuneup, and 3 solenoid parts ...air filter new...does anyone online have SUGGESTIONS
AboutAbout mileage rotaries are terrible in stop and go traffic. Also winter gas formula hurt mileage too. I see about 10-15% drop during winter time. But that could be a combination of more accessories running and lumpy winter tires.
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