Just threw three codes at once.

It's been a long year. That's my excuse for not getting that right away.

Well, that got easier. Last night I cleared the codes, disconnected the battery, let it sit for a bit and hooked the battery back up. I just went out and started it up again and let it run for a few minutes.

Misfires on cylinders 1, 2, 3, 4, 7 and 8. I seriously doubt that both 02 sensors failed or that 6 injectors or coils failed. I'm now leaning towards a fuel pump or fuel pressure regulator or something like that.

Of course, I have to drop the fuel tank to even test the fuel pump, and it's dang near full.

AngryCorvair wrote: In reply to Brett_Murphy: Random misfire and lean bank: look for air leaks between MAF and throttle body. Especially if it gets oil changes at a quickly place that tries to sell you an air filter every time.

I forgot to mention that I inspected for leaks, and didn't see any. I have not tried spraying anything around the hoses/intake yet, though. Thanks for the reminder.

I'm using this thread to kind of keep track of what I'm doing.

Checked for leaks again today, but didn't find any, including gassing around everything with starting fluid. Going to disconnect the O2 sensors on Monday. The holidays have it kind of busy around here.

How many miles? Has the timing belt been replaced - and when? There have been some instances with 2uzs where a timing belt slips a cog and starts throwing misfire codes like your symptoms.

You don't drop the tank to check the fuel pump. There is either a port on the rail to hook on to or you put an adapter bolt/fitting on the banjo bolt at the rail. Pretty sure the UZ series just has a port on the rail.

Dr. Hess wrote: You don't drop the tank to check the fuel pump. There is either a port on the rail to hook on to or you put an adapter bolt/fitting on the banjo bolt at the rail. Pretty sure the UZ series just has a port on the rail.

This. I rented a tool from NAPA (free) and did this on my E150 not too long ago. Went from thinking I needed a fuel pump to replacing the FPR.

oldtin wrote: How many miles? Has the timing belt been replaced - and when? There have been some instances with 2uzs where a timing belt slips a cog and starts throwing misfire codes like your symptoms.

There are about 3000 miles on a fresh timing belt, pulleys, tensioner and water pump. I did it myself, it's been fine until now. I should not rule it out, though. Thanks for the reminder.

Dr. Hess wrote: You don't drop the tank to check the fuel pump. There is either a port on the rail to hook on to or you put an adapter bolt/fitting on the banjo bolt at the rail. Pretty sure the UZ series just has a port on the rail.

Drop it to change it, not check it. I must not have been clear. I have to get a fuel pressure tester, It's going to wait until Monday.

I checked the resistance on the crankshaft position sensor and it is at 1068-1070. It looks shot: in spec is 1630 to 2740 Ohms cold.

Swapped out the crank position sensor, no change. Tested the camshaft sensor, was also out of spec, swapped that. It got a little better, but then I noticed the odor coming from the tailpipe. Seems it may be a head gasket.

Why couldn't this have happened before I changed the timing belt?

Pressure test shows gaskets are good. It may have jumped timing.

Ugh.

It jumped timing. I have no idea why, yet. Ugh.

Hydraulic tensioner took a dump?

Where in this thread, especially at the beginning, did you MENTION THAT YOU JUST DID A TIMING BELT?

So, yeah, un-jump the timing belt, make sure the tensioning mechanism is OK and try again.

I did the timing belt 8 months and thousands of miles ago. I did the water pump, pulleys and tensioner at the same time, so I think I was in denial about it possibly jumping timing. I change it so this wouldn't happen, after all. Now, I'm just hoping that it didn't crash valves.

The tensioner failed in less than a year. Gates' quality seems to have deteriorated, or I was fairly unlucky.

Luckily, the engine appears to have escaped any damage during this debacle.

I'm glad I went OEM on the Subaru.

Thanks for the help.

Brett_Murphy wrote: I did the timing belt 8 months and thousands of miles ago. I did the water pump, pulleys and tensioner at the same time, so I think I was in denial about it possibly jumping timing. I change it so this wouldn't happen, after all. Now, I'm just hoping that it didn't crash valves. ...The tensioner failed in less than a year. Gates' quality seems to have deteriorated, or I was fairly unlucky. Luckily, the engine appears to have escaped any damage during this debacle. I'm glad I went OEM on the Subaru. Thanks for the help

GAAAAAAAAAAH!!!! I just put a Gates kit in the Subaru about 6 months ago...