Car sat for a few years......replaced fuel pump and cleaned fuel tank to a degree........drove it to replace dry rotted tires and the bucking and jumping started. Added seafoam and gas to tank to remedy problem to no avail. Removed fuel pump and checked for blockage, removed intake manifold to access fuel rail. Removed it and checked each injector for proper spray pattern, including the 7th injector. Blew compressed air thru fuel circuit and replaced fuel filter. Fixed leak at air intake trunk to throttle body. Car runs no different after above checks. Advice needed to access codes from weird diagnostic port(can't find a scanner to fit it).
Sometthing to think about. When it is cold the engine it runs in close loop, after it warms up it gos to open loop.
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SOURCE: 2000 mazda miata r&r throttle body
se if egr is controled by vacium or electric
if it is by vacium then locate the egr solenoide and make sure it has vacium in one hose w/ engine runing if it does then replace solenoide
SOURCE: I have a 1992 Mazda MX3 that sat for 6 yrs with a
try to clean out the mass air flow sensor and check to see if you need to replace the sparkplug wires and if you can also check on any engine codes
SOURCE: i am trying to get a 1990 mazda b2600i running but
wrong vacuum line hooked to fuel regulator
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BTW....Car runs fine upon initial startup but runs erradically when up to temp..
Is there a way to manually get codes from the diagnostic port, which is non OBD ll?
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