98 Mazda B4000 5spd will hesitate / stumble on light load

Oct 08, 2006 5 Replies

If you shift up to the next gear too soon or slow down in a gear then try to accelerate....the truck seems to cough / hesitate / buck until you ease off the gas or the speed picks up .. my MAF ?



Have 129K and already changed the fuel filter and added injector cleaners



Thanks in advance.



Phil



It's the plug wires. It could possibly be another ignition component, but the wires are the best place to start. What's happening is that high cylinder pressures during "lugging" make just a little more electrical resistance in the spark gap, and your wires start leaking electricity.

I figured it might be that too. I will then try that this coming weekend as a new set should be cheaper than a new MAF sensor (assembly)

junkyard parts=junkyard performance. How in the world would you know if the part you put on was any good? Why not just go have it properly diagnosed?

s

I'd look for a vcuum leak.

Ed

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