Error Code 300: Enigine Misfire

[etlsport]

i would change out my fuel filter and fuel pressure regulator first.. dino did a great write-up on how to do it.. and there is an allen wrench modified to make the job easier floating around the forum somewhere that i sent out as a community tool, you can find out who has it and ask for it and they will send it to you free.. all you have to do is send it to the next person who needs it when you are done

as for the search.. there is another "search" tool just under the vehicross.info logo at the top of the page

[JGeorge264]

Changing the spark plugs took care of the problem when mine was doing the same thing. :bgwg:

[VehiGAZ]

But before you do those other things - first remove each coil pack and see if you have moisture down in the holes. This has happened to a few of us recently after power-washing our engine bays. Just a little bit of water/moisture will ground out the ignition pulse. If any are wet, let them dry out and reassemble.

[nfpgasmask]

I am no mechanic, but if this was happening to me, I would most certainly start with the easy stuff:

1) Fuel Pressure Regulator
2) Fuel Filter
3) Spark Plugs

Change your oil and PCV valve while your at it and see what happens and go from there.

Welcome to forum, hang around a bit and you will get to liking it and learn loads about your awesome vehicle.

How many miles you got on this VX?

Bart

[mattlewis9333]

It has just over 91,000 miles on it. I bought it almost 2 years ago with 48,000 miles, but I've been commuting to work. Luckily, I just moved about 5 miles from work, so wear and tear and awful mileage are less of a concern.

I ordered a FPR and a Fuel filter and they'll be in today. I'll change those out this weekend and let you guys know. I'll probablly also change the spark plugs since I have close to 100,000 miles.

Also, I'll check for water in the spark plug holes, but I haven't ever power washed my engine, so I have less hope of that being the culprit.

[nfpgasmask]

It has just over 91,000 miles on it. I bought it almost 2 years ago with 48,000 miles, but I've been commuting to work. Luckily, I just moved about 5 miles from work, so wear and tear and awful mileage are less of a concern.

I ordered a FPR and a Fuel filter and they'll be in today. I'll change those out this weekend and let you guys know. I'll probablly also change the spark plugs since I have close to 100,000 miles.

Also, I'll check for water in the spark plug holes, but I haven't ever power washed my engine, so I have less hope of that being the culprit.

Yeah, it's definitely time for you to do some swapping of these wear parts. I bet the FPR and fuel filter will fix this. If not, spark plugs could definitely do it if you haven't ever changed them. IMO, spending a few hundred dollars on replacement parts is a good idea for high mileage VXes.

Did you find the thread about how to change the fuel filter? It's pretty easy just a little messy and your garage will stink like gas for a day...

Bart

[Ldub]

It has just over 91,000 miles on it. I bought it almost 2 years ago with 48,000 miles, but I've been commuting to work. Luckily, I just moved about 5 miles from work, so wear and tear and awful mileage are less of a concern.

I ordered a FPR and a Fuel filter and they'll be in today. I'll change those out this weekend and let you guys know. I'll probablly also change the spark plugs since I have close to 100,000 miles.

Also, I'll check for water in the spark plug holes, but I haven't ever power washed my engine, so I have less hope of that being the culprit.

I'm gonna guess that you'll find the culprit to be a coil pack or spark plug.
It could be something as simple as a bad connection on one of the coil packs.

[mattlewis9333]

I finally got around to changing my fuel pressure regulator yesterday evening and my problems are solved. No more bucking during acceleration. However, when I got in there I found that the vaccum hose that attaches to the FPR had disconnected itself and the hose clamp had slipped off into who knows where. So, that probably was the issue, but I changed the FPR anyway. I used a normal hose clamp from Autozone to finish it off.

I changed my Fuel filter the day before yesterday and although that didn't fix my entire problem, it did fix the problem of engine bucking when I was just cruising at speed on the highway so I highly recommend that change to anyone experiencing the same issues.

As for the modified allen wrench that you guys send around, you had me scared that it was something that I wouldn't be able to do myself. I just cut my allen wrench using a Dremmel tool cutting blade that I put on my drill. That $2.00 item easily cut the extended length allen wrench that I got in a set at Autozone for 7.99. I have now used those dremmel cutting blades attached to my drill to 1) take off the silicone on the bottom of my VX windows 2) modify the allen wrench for this project and 3) shave down the tips of the circlip pliers so that they would fit in the tiny holes to remove the FPR on this project. Best $2.00 I ever spent.

[Chopper]

It has just over 91,000 miles on it. I bought it almost 2 years ago with 48,000 miles, but I've been commuting to work. Luckily, I just moved about 5 miles from work, so wear and tear and awful mileage are less of a concern.

I ordered a FPR and a Fuel filter and they'll be in today. I'll change those out this weekend and let you guys know. I'll probablly also change the spark plugs since I have close to 100,000 miles.

Also, I'll check for water in the spark plug holes, but I haven't ever power washed my engine, so I have less hope of that being the culprit.

Timing belt time too. If you haven't done it yet, don't delay. Guaranteed already stretched for sure, and a broken T.B. will ruin your week. Like a colonoscopy at fifty....you gotta do it.

[mattlewis9333]

Chopper, please elaborate about the timing belt. I'm no mechanic.