Sludgy 1990 F150 5.0
- Thread starter cbrf3
- Start date
Thanks for the update!
What you are doing seems to be working. Slow and steady.
What you are doing seems to be working. Slow and steady.
IMO there's some really good cleaning going on there. I'd stick with what you've been doing with the XOM product you used.
She's a beaut Clark!
You got this down to a science. After 3 years you still have folks arguing about 'this does this and it therefore it can't do thus'
3 years........
3 years with pictures.....
Disclaimer - I would never have guessed that mere short interval's would have knocked that much gunk loose.
You got this down to a science. After 3 years you still have folks arguing about 'this does this and it therefore it can't do thus'
3 years........
3 years with pictures.....
Disclaimer - I would never have guessed that mere short interval's would have knocked that much gunk loose.
Now that the sludge level is coming down, how about the HPL oil to really knock things loose? 
So, the truck is at about 15,000 miles since we got the beast. Some noise prompted a timing chain replacement.
Here are the pictures. Chain was well past done and had a ton of slack.
Here are the pictures. Chain was well past done and had a ton of slack.
That chain and cover is dry as a bone. And shouldn't be...
It was a concern for sure. We cleaned off all of the sludge and pushed a bottle brush up all the way into the valve cover; we thought that is where the oil is supposed to come from to oil the chain.
Usually the chain oil comes from a bleed off passage from the front cam bearing (pressurized). Drip oil from the head could be a possibility. Looks like yours might be the case. Oil runs onto the distributor gear, gets flung forward by the distributor gear, then the oil slinger on the front of the cam gear does the rest.
Yup, should be a grove in the back of the cam retainer that’s also what the slot in the back of the timing gear is.
I think the “slinger” is actually a cam sensor pick up. In the old days it would have been a fuel pump eccentric.
I think the “slinger” is actually a cam sensor pick up. In the old days it would have been a fuel pump eccentric.
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No cam sensor on the EEC-IV Windsor, that's a just a slinger as noted. The hall-effect sensor in the distributor is used for injection and ignition timing.
Can you possibly place an arrow on our picture that shows where the oil should be coming from?
Cool, I was wondering. Seems odd.
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It should be coming off the cam and distributor drive gear, IIRC.
Here's the valley, you can see the drain holes all down the middle of it, not much, if anything, is going to be coming out that hole between the valley and the timing area:
EDIT: you can see the hole into the timing area on this one:
You MIGHT get a bit off run-off coming out the top of #1 lifter, on its way to the valley, but the amount would be minuscule.
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It's coming from behind the cam gear. Probably in the are in the bottom cut off in the photograph.
Now I see the passage. Left side of photograph 5 & 6 (small hole).
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It comes from behind the cam retainer plate.
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Yes, there's the hole right in front of the cam that feeds behind the upper gear, lubes that area and then flows through those two channels, and there's also the spray coming off the timing gear itself, IIRC.
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Yes, the channel is in the thrust plate, but what feeds that area, and into the channels behind the gear is visible in the photos as @ka9mnx noted.
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It comes from behind the cam retainer plate.
