Strange problem, 1991 Mazda b2600I

10

Asked by Dec 30, 2014 at 04:26 PM about the 1991 Mazda B-Series Pickup 2 Dr B2600i Standard Cab SB

Question type: Maintenance & Repair

So  having funny issues with this
truck, and I SUSPECT a timing issue,
but I should get some help from you
guys first.

So basically, my truck runs really
shaky when I'm stopped such as at a
stop sign or something. When I give
it just the SLIGHTEST amount of
gas, the RPMs drop to like 100 and it
runs so rough like it wants to die, but
it never dies completely. Then I give
it a little bit more gas and it runs fine.
It ONLY starts on the second try, and
on cold mornings maybe like the 6th
try.
Also it's getting less than 9 mpg.
I changed my spark plugs hoping
that was the issue, but it changed
nothing. My distributor doesn't look
very old, and it's fairly clean. Same
with plug wires, no bulging or
cracking or anything like that.

what do you think?

4 Answers

5,035

I'd guess fuel injection pressure regulator. Are your plugs somewhat dirty and maybe wet even though they're new?

10

They may be. Also a piece of porcelain may have fell in when I was changing them, because it also developed a noticeable and consistent tick after I changed the plugs. It's just running so rough right now. How would I test the fuel injection pressure regulator?

1 out of 1 people think this is helpful.
5

When my 1992 B2600i (manual transmission, 2-wheel drive) had those symptoms, it was the ECM.

Injectors

Your Answer

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