Hello all, I need some help on my 2000 b2500 .Sometimes after I get the truck out going for a ride it will start chattering and smoke comes out and I let off the gas it stops.Swaped out the hose on the valve cover while it seemed to be getting hot and collapsing. Its only done this 3 or 4 times since I changed the oil, filter, plugs, and wires.Also sometimes it codes out on cylinder 4 misfire when this happens. ..not sure if there the same issue.What could cause these problems.Thanks

 

Check on Ford Ranger sites. 1992 was the last year that Mazda pickups were made by Mazda. They were re-badged Rangers from then on.

 

Ever change the PCV valve? MAZDA never does!

Misfires: Can Be Caused By a Million and One Things,

Vac Leaks
Wiring Issues
Spark Plugs(Even Fresh Spark Plugs That Are Crappy Quality.... E3 And Such)
Ignition Coils
Alternators (Search EMI)
MAFS
Injectors
Injector O-Rings
Intake Gaskets
TB Gaskets
PCV Hoses
PCV’s
Malfunctioning EGR
Malfunctioning CAS
O2 Sensors
Aftermarket Intakes
Intake Hoses
Vac Lines
Timing Chains
Timing Chain Tensioner
Broken Cam Gears
Malfunctioning Cam Sensors
Incorrect Crank Gears(The I4 Has Like 40 Different Configurations For Whatever Reason)
Incorrect PCM Flash
Issues Within The PCM
PCM Wiring
Bad Diaphram Within The FPR
Issues Within The Fuel Pump
Dirty Fuel Filter
Dirty Fuel Lines
Pre-Cats/Poor Exhaust Flow

If the above gaskets/seals have not been changed, change them (like throttle body, intake). Clean your MAF sensor, throttle body.
Change your PCV valve and probably that short hose as well.
Inspect the intake accordian tube for cracks. Inspect for vaccuum leaks.
Put in a good Fuel system cleaner: Red Line Synthetic Oil - Gasoline Fuel Additives - SI-1 Complete Fuel System Cleaner
Inspect wires. Re-set ECU after doing above.

 

Has new pcv valve on it.Sounds like the valves start chattering then smoke comes from the pipe untill I back off the gas then it does fine all the way home.I think its got something to do with the pressure on the motor?

 

Do a compression test.

 

Yes, this is next step.

 

It only smokes and chatters when i get over sixty then I back off the gas and it stops and does good...I have a leak at my air intake manifold also that might have somthing to do with it.

 

You just may be right. How about fixing it?