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-   -   Emergency Lemons Issue (https://www.miataturbo.net/engine-performance-56/emergency-lemons-issue-96917/)

Philly Miata 05-11-2018 05:14 PM
Emergency Lemons Issue
 
92 stock everything, we are having fuel cut at increasing frequency depending on what seems to be fuel level. We scrubbed the tank, had lots of rust, replaced the pump, sock, filter. Drained the tank, fresh fuel, it runs fine until a bit above half a tank, then we get a fuel cut on high load. We will change the filter again, it got nasty again but it still seems to be correlated with tank level. Looking for ideas. We plan on removing the tank tonight and trying to go through it.

hi_im_sean 05-11-2018 05:33 PM
Sounds like the tank is just done. If a tank is falling apart internally, the only remedy is to replace it (or coat it, but that sucks). Clean it all you want, more rust will just flake off and clog your filter and sock (if that indeed is your issue).



Also, is the in tank return pipe stock? or is it shortened?

moocow 05-11-2018 05:36 PM
How old is the pump?

Philly Miata 05-11-2018 05:39 PM
Originally Posted by hi_im_sean (Post 1481627)
Sounds like the tank is just done. If a tank is falling apart internally, the only remedy is to replace it (or coat it, but that sucks). Clean it all you want, more rust will just flake off and clog your filter and sock (if that indeed is your issue).



Also, is the in tank return pipe stock? or is it shortened?
we are searching for a potential replacement at the moment. Everything is stock.

Philly Miata 05-11-2018 05:42 PM
Originally Posted by moocow (Post 1481628)
How old is the pump?
unknown, we replaced the original pump last night.

EO2K 05-11-2018 07:41 PM
OEM replacement pre-filter sock in place?

LukeG 05-11-2018 11:16 PM
Clogged injectors? If everything else has been cleaned and replaced I would look there.

Philly Miata 05-12-2018 06:30 AM
Originally Posted by EO2K (Post 1481646)
OEM replacement pre-filter sock in place?
One of our bandaids for the moment is spraying the shit off of the sock with solvent, it has been sucking up shit and just getting caked so that’s less fuel there. We have also lined the tank with magnets and are now practiced enough on swapping filters.

curly 05-12-2018 10:16 AM
start calling up junk yards for a new tank. send one member there, rest of the team starts dropping the subframe. Remember to brace the front if you're sitting on jack stands.

ridethecliche 05-12-2018 11:08 AM
Let me know if you need me to drop a set of injectors in the mail for you. I have a set of nb2 and nb2 injectors.

Philly Miata 05-12-2018 03:07 PM
Originally Posted by curly (Post 1481710)
start calling up junk yards for a new tank. send one member there, rest of the team starts dropping the subframe. Remember to brace the front if you're sitting on jack stands.
we have a new tank coming we’re gonna swap it tonight

loudes13 05-12-2018 07:23 PM
I had the same issue in my ITS race miata. I’m convinced it’s the gas tank.

Philly Miata 05-14-2018 05:54 PM
We got a new clean tank in and the car ran like a champ. Shame we missed out on so much with pitting every 45 minutes the first day.

loudes13 05-14-2018 07:43 PM
Sounds great! Rust in the tank sucks.


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