Engine Misfires?

The spark advance pickups may be bad in your distributor. These little plastic pieces can sometimes stick and cause your vehicle to stall while climbing a hill. Look under the plastic plate in the bottom of the distributor.

What do you look for? How do you tell if they're sticking? Are they replaceable or do you replace the distributor?

I had a similar problem and it ended up being the cam phaser. Unfortunately the rear end seal on the motor had gone out and the engine had gotten low on oil. This caused the bearing to go on the cam phaser and the truck started to misfire and I ended up with engine codes prior to the truck not working at all. I limped it to the dealer (a painful evolution) and a little bit of money later (thanks extended warranty) all was better.

Engine Performance problem
2003 Mazda b3000 6 cyl Two Wheel Drive Manual

While on a road trip suddenly the engine began to missfire and knock. The check engine light was flashing indicating miss fire and suffered a lack of power. I drove for approx. 10 min. After as we were crossing an international boarder. I had the vehicle towed from there. I get no trouble codes from the OBD2. Plug, wires, air filter, fuel filter are ok. I haven't checked fuel pump pressure or done a compression test as of yet. Any ideas? Thanks in advance.

Engine Performance problem
2001 Mazda b3000 6 cyl Two Wheel Drive Manual

Hi, I have a pick up truck Madaz 2001, manual, 81,000 miles, I have problem engines missed fire cylynder # 1 and # 3, but did not showed code for missed fire, Engine showed code P0171 ( Cilynder #1 Bank 1 too lean ).
Sofar I have replaced new coil pack, new spark plug and wire, and new gas filter, also serviced fuel injection, I checked each fuel injection with long scop, I heard it pump and with noid light, it flashed. I also checked spark to spark plus. It 've got spark strongly. Checked all vacuum hoeses did not find any leak, and spay caburator cleaner around intake manifold not any leak, either.
I drove the truck to local auto zone, scan trouble code.
Code P0171
Lean Air/ fuel ratio Bank 1
(cylinder #1 denotes Bank 1)
probale cause.
1 Low fuel pressure
2 Large vacuum leak
3Dirty/defective MAF sensor
4Engine mechanical condition.
Please, some one give me some advice, What 's problem my truck and How to fix it? Thank you

Hi, Sofar, I haven't got any luclk yet, I 've tried whole sunday went back and fowar to buy compressure test and fuel injection test, It took a few trip to get a right adaptor for 2 major test , but did not fix right problem,
I tested cilynder#1 = 150 psi
fuel pressure = 60 psi w/o engine run, 67 psi with engine run.
I cleaned MAF sensor with rubber alcohol.
And double check ignition spark cilynder # is OK.
When started engine is still same proplem, running only 4 cinlyder, cilynder #1 and # 3 misses fire, But on dasboard did not show and trouble code. I hooked up OBDII could not scan any code.
Sofar I haven't find any vacuum leak, I spayed 1 can cab cleaner around EGR valve and round lower part of intake manifold to see engine state, but not thing.
Any helps will be apreciated.

Hi ! Thank you for quick responding. Please, some one tell me Why engine missed fire, But did not show and code? I could not scan any codes.
Any helps will be apreciated.

My Fathers Mazda B3000 is misfiring badly. We have changed the Plugs, wires, coil pack and air filter. We ran a coder on it and it stated that 5 and 6 where misfiring. We have check the plugs and wires even though there new and we still cant find anything wrong with it.

Hi, I removed intakemanifold again, and tracing all the hoses around it, and around the engine, But could not find any leak, checked PCV ok, It 's rattle, no stuck.
I've tested and replaced new Oxygen sensor on Bank 1, and new upper intake manifold gasket.
It's still same problem, cylinder 1 and 3 misfired,
Do you know any electrical relate to the problem?
Thank you?

The pcm is faulty

Hi, Please, some one tell me where was the vacuum pump"s motor location on my Madaz V6 engine 3.0? Or Does it have vacuum pump's motor?
I recently hooked up vacuum gage to intake manifold port to check how my engine vacuum. It was steady but low side about 11 in hg, It should be healthy at 15 to 20 in hg at idle speed.
The problem could be internal vacuum leaking, I could find any external leaking, the upper intake manifold gasket has been replaced new, I may change lower intake gasket, Just working around may or may not right.
Once more time, Please tell me where is my Madaz V6 engine vacuum mortor? Thank you.

Hi, I recently replaced IAC solonoild, PCV valve, and EGR valve, But The engine is still rough, The Engine vauum is still low, it's only 11 Hg, It should be 15 to 20 Hg for healthy engine.
All the part have been replaced, the only thing is intake manifold runer. That the thing Engine take out side air create vauum . But engine did not show any diagnostic code, as P0171, 0r P1512 as Intake manifold runner control (IMRC ) malfuntion ( bank 1 stuck open)
Is there any body know about Intake manifold runner, please, tell me, Thank you
No give up, be pation, keep working around.

HI, It would be nicer to hear different opinion than the same general technic apply for any thing. Thank you any way.