I'm a Toyota guy so excuse my ignorance. Looking at a 01 Pathfinder with 150K on it. What should i know? Google has already told me about putting loctite on the power valve screws. Anything else? I can handle any work--up to a full rebuild.
Did a compression test after pulling the plugs.
Cold & Dry. All plugs pulled. Intake manifold off. Freshly charged Battery.
7 compression pulses for each cylinder per Ford manual.
1 - 210
2 - 215
3 - 230
4 - 230
5 - 225
6 - 230
Pretty dang impressive for a cold engine with 213,700 miles...
Not always, injectors (in non-direct injection) are upstream of the valves. You'd have to figure out which cylinder landed on the intake stroke and even then a drop might evaporate by then.
When I say wet, I mean drop formation on the tip. This is a Ford returnless system. No regulator on the rail. It has what looks to be a regulator, with a vac line and everything, but this is a common misconception.
Since it's returnless, you would hear the fuel pump pressure pulses whack at the...
Finally! A Lead!
Ran the engine for 30 seconds and then quickly pulled front bank plugs.
Wet and smell of Gas.
I do have negative trim on both banks, but it's under 10% (combined short term and long term) so I wasn't thinking much of it.
Now, this didn't seem to be a problem before, and no...
Yeah, HLA tick was one of my first directions of thought. My fam member bought this thing in January and "doesn't remember" ever having the oil changed. (And they commute to work)...
Then I come along and flush it with 5w-20 motorcraft syn blend which is affectionately known as "brown water"...
So I'm looking back over pictures I took to document things and I noticed something. Not sure if it's parallax or not.
But is that left intake valve (bottom left) open (down) when it should be closed (up) like it's twin to the right?
http://imgur.com/fjTFla3
Normally, I'd agree. But the coating on motorcraft spark plugs is very prone to failing.
When I say a small amount of antiseize, I mean a ridiculously tiny amount.
I also agree about the torque. That's why I torque ford plugs by hand.
When it comes to ford and motorcraft plugs, using torque...
I repeated the cylinder drop test today (disabling coil on plug modules one by one) and the knock did not change.
That rules out exhaust leaks and rod knock.
I timed the tick/knock. It happens 6 times per second. That's 360 times per minute. The valve train operates half the speed of the...
I'm leaning towards this. Because I did, uhh, maybe tweak the exhaust some when removing it. But it doesn't seem to get better when hot. Which contradicts it.
However, after googling, it seems these engines are notorious for manifold failures.
Interesting. Some of the coils have been replaced.
I put just the "tiniest" amount of antiseize on the plugs, since the motorcraft plugs already have the "nonstick" coating on the threads.
04 Ford Fusion 3.0 Duratec DOHC V6. 209,100 miles.
PCV valve failed, line collapsed, and blew out the gaskets.
I replaced:
Valve Cover Gaskets (Fel-Pro)
Upper and Lower Intake Gaskets (Fel-Pro)
Throttle Body Gasket (Fel-Pro)
Timing Cover Gasket (Fel-Pro)
Front Main Seal (SKF)
Oil Pan gasket...
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