Stalling when clutched in

[russman]

Ideas guys? Have to rev to 3000 and balance the clutch to take off at a normal pace. 0-2000 revs are incredibly slow, no power or torque


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[hks_kansei]

THe rubber on the battery won't cause a problem unless the battery is touching metal and shorting.


As for the roughness, have you checked the plugs?
There is the potential that they are fouled and can't spark properly. I would suggest taking each one out and having a look, the tips on an MX5 will usually be brown/black and dry. If they're dark black, white, or wet, there's an issue somewhere.

WHile they're out I would suggest replacing them, it's only $20 for a set of new ones. Don't get fancy Iridium ones or any of that crap, just use plain old copper ones (I've always used NGK or Bosch and never had an issue) and replace them once a year.



Pretty much check the basics.

Is it getting air? (check air filter, check hoses for holes/cracks leaking air in)
Is it getting fuel? (the fact it can rev suggest it should be)
Is it getting spark? (remove plugs, rest a plug against the rocker cover and turn the car over, you should see a spark, repeat for all plugs... don't hold the metal bits, you'll get a decent shock)
Is it getting compression? (you'll need a special tool for this, a compression tester... if it's low on compression you can't do much outside of an engine rebuild)

[russman]

[quote="hks_kansei"
Pretty much check the basics.

Is it getting air? (check air filter, check hoses for holes/cracks leaking air in)
Is it getting fuel? (the fact it can rev suggest it should be)
Is it getting spark? (remove plugs, rest a plug against the rocker cover and turn the car over, you should see a spark, repeat for all plugs... don't hold the metal bits, you'll get a decent shock)
Is it getting compression? (you'll need a special tool for this, a compression tester... if it's low on compression you can't do much outside of an engine rebuild)[/quote]

99% sure it's the fuel pump failing, not exactly dead but failing. Any sort of load and the engine will stall. Bought plugs just in case, see how tomorrow goes! Air is alright, sucks in beautifully.

[93_Clubman]

99% sure it's the fuel pump failing, not exactly dead but failing.

Russ, given your thoughts on a possible cause, if you remove the fuel pump/gauge sensor assembly from the tank then check the inside of the electrical connector block at the very top of the assembly - see here:
viewtopic.php?f=55&t=46425
You can test the connector block for continuity with a multimeter from the outside at the top of the fuel pump/gauge sensor assembly, so initially no need to open the tank up. Given the issue is intermittent, if this is the problem you should see reduced continuity, although it may test ok given it's happening under load.

But I'd also be checking the ignition timing; the 'Fuel Inj' relay in the engine bay fusebox; the fuel pump relay under the driver side dash; & the ECU for dampness or any damage to the PCB:
viewtopic.php?f=29&t=62258&hilit=no+power+below+3000%2A
viewtopic.php?f=29&t=60066&p=759454&hilit=timing+light#p759454