Lakeus

Just wanted to clarify what the symtoms of a crook fuel pump would be, I've been to the mechanics today and they said it needs to be replaced and have quoted it and reckon its gunna be $440 for the part alone.

From what I've heard a fuel pump normally just works or doesn't work , and even if it wasn't working 100% wouldn't I be able to notice it performance wise such as not being able to reach high revs ?

Anyway I've found a fuel pump on Online Mazda Parts and they have them priced for $325.

All signs for far are pointing to this guy is trying to rip me off. Couldn't anyone shine some light on this for me ?

Thanks all !

BigCajun

iTrader: (1)

I assume you used search button at top? If not, try "rx-8 club bad fuel pump" search. Plenty of info there. If you did, pardon moi.

alnielsen

iTrader: (4)

Rock Auto has the fuel pump assy for $191. Try other online auto parts stores.

Fuel pumps usually overheat when they begin to go bad. A fresh full tank of gas cools them and they start working again.
There is likely a DIY on replacing it, on this site, some where. I've done it. It's not that difficult. There are some plastic parts that can snap off if you aren't careful.

Lakeus

thanks alnielson,
& Cajun I have searched and I'm not having any of the symtoms others have said with pump issues are, so I was just curious why the mechanic would think it needs replacing.
I can redline the 8 noworries without any sudden loss of power or rpm drop, also I do accumulate a black dust on the back of the car but I have found that pretty common with yellow cars that exhaust fumes do show alot more than other colors, Its not asif its spluttering black crap out the back everywhere.

I do feel the mechanic has seen me as a young kid that he can try rip off easy, as he tried to charge me an extra $20 when I went too pay my service, though he could be right and I could be damaging the car if I keep driving it.

I guess the best solution is to take it too another mechanic?

BigCajun

iTrader: (1)

Hi. First I''ll admit I'm not an rx-8 expert but I do have some general mechanic experience. I thought you said earlier you were having power loss at high revs? Not sure what points to fuel pump. Bad cats can cause lots of problems. If you can afford to let it sit you can possibly do some troubleshooting without spending money at shops. If you have jackstands maybe you could try getting it up off the ground and taking the cat off to inspect it. I''ve seen them melted, broken up and disintegrating. Seen hollow cats where all the strata was lodged in pipes and mufflers causing performance loss. Sometimes just banging on the cat or pipes you can hear pieces rattling. People say glowing means bad cat but there's usually a fuel issue that makes the cat glow. Dealer scanned mine and said I had a bad cat, $1400. But they didn't say I had a misfire which probably killed it. I figured they would sell me on cat and then say lookee here we found all these bad parts, gonna be another $500. So I changed plugs,wires and coils. 1 plug was so bad it looked like it was welded on the contact. I bought a midpipe to replace cat but I had health issues so it's been sitting for 2 months. Anyway if you can sit it, and do some research & troubleshooting, you may save some money.

Oops, sorry lakeus, just went back and read your original post. I obviously misunderstood you. You can go to most auto part stores and get your OBD codes scanned for free and they can usually define them. Mine was running good when the CEL came on and after awhile it started misfiring. Did the tuneup, air filter, cleaned MAF, oil change. Ran better but still misfired at high rpm so I'm hoping midpipe and ESS clearing will fix it. Not sure when I'll get to it. I have an 04 yellow GT , but I get free car washes so I never notice black residue. Please let us know when you find out. Good luck