Misfire Trouble
#1
Misfire Trouble
I know I'm probably not going to get the "it's probably just a coil/Plug/wire" I'm hoping for, but here's the issue...
2003 D2 4.6 SAI. No symptoms leading up to this. Was running like a gem, then I went to head to work this morning and as soon as I started her up I had a flashing SES. Pulled codes P0300 and P0303.
When I bought the truck it had a blown motor, so I dropped a '99 Rangie motor in it with 90k on the clock. I also had the heads done at that point. Here's where it gets interesting. I popped the hood and noticed the coolant res was a little low, and there is some seepage in the back driver's side gasket corner. Is cylinder 3 near a water jacket/troublesome head bolt? I'd love for this to not be a cracked block, but I'm mentally preparing for the worst.
On a side note, I did recently replace the AC compressor with a used one. It did run a little rough for a day or so (the pully was a little rusty), but once it cleaned up it's been going great.
I'll have time to pull the plug tomorrow for inspection, but wanted to get your initial thoughts. It's the coolant aspect that has me worried. I guess I'm asking if Cylinder 3 is one that is regularly involved in a block issue, or am I just paranoid?
Thanks!
Nick
2003 D2 4.6 SAI. No symptoms leading up to this. Was running like a gem, then I went to head to work this morning and as soon as I started her up I had a flashing SES. Pulled codes P0300 and P0303.
When I bought the truck it had a blown motor, so I dropped a '99 Rangie motor in it with 90k on the clock. I also had the heads done at that point. Here's where it gets interesting. I popped the hood and noticed the coolant res was a little low, and there is some seepage in the back driver's side gasket corner. Is cylinder 3 near a water jacket/troublesome head bolt? I'd love for this to not be a cracked block, but I'm mentally preparing for the worst.
On a side note, I did recently replace the AC compressor with a used one. It did run a little rough for a day or so (the pully was a little rusty), but once it cleaned up it's been going great.
I'll have time to pull the plug tomorrow for inspection, but wanted to get your initial thoughts. It's the coolant aspect that has me worried. I guess I'm asking if Cylinder 3 is one that is regularly involved in a block issue, or am I just paranoid?
Thanks!
Nick
#3
#4
I got pretty swamped with work today, but will have some time to take a closer look tomorrow. At first glance, it looked like it's seeping through the back corner of the gasket, no evidence of dripping from higher up. But again, that's at a glance. Someone on another forum suggested it may be leaking from the throttlebody heater gasket, so I'll check that out as well. Hopefully they didn't over-tighten those bolts.
#5
Just had a chance to take a closer look. The coolant is definitely coming from the throttle body gasket Whew (I think). I mean... much better than another head job/motor. But still the misfire question remains. I'll probably just swap out the plugs and wires, but I hear it's a PITA. Should I spring for coils too while I'm doing it, or is it not as bad as everyone says to circle back to those if needed?
#7
#10
Just had a chance to take a closer look. The coolant is definitely coming from the throttle body gasket Whew (I think). I mean... much better than another head job/motor. But still the misfire question remains. I'll probably just swap out the plugs and wires, but I hear it's a PITA. Should I spring for coils too while I'm doing it, or is it not as bad as everyone says to circle back to those if needed?