miles on your 4.9
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Update...
Approximately 3 weeks ago, it rolled over for the 2nd time. Still performing well!
Fleet Mechanic
Joined: Nov 2002
Posts: 1,643
Likes: 69
That's probably some kind of record for a feedback carbed 300, which was littered with vacuum hoses and other emissions control gizmos.
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
However, my son's 1984 with original feedback system is still alive @ 236K miles. It has run well until recently and I am "chasing" the problem. He wants it to stay "stock" for as long as possible.
Fleet Mechanic
Joined: Nov 2002
Posts: 1,643
Likes: 69
Why not start a thread on the issues he's having. Maybe somebody here can help.
New User
Joined: Feb 2017
Posts: 14
Likes: 0
92 f150 I-6 with 5 spd. 301k before the digital readout blacked out about 2 years ago, have driven it almost everyday since for a minimum of 55 miles each trip
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Elder User
Joined: Sep 2012
Posts: 505
Likes: 7
95 F150 4.9L w/ M5OD -- got it with 292,000 miles & put 1,000 more on it. Have been doing maintenance. Replaced thermostat (had failed open & truck never warmed), radiator (new thermostat = heat = blow out stopleak from PO), all vacuum lines, heater core hoses, transmission fluid + top seal + inspection seals, air filter, oil, plugs, wires. Runs pretty nice.
Two issue:
(1) Oil pressure drops to 10 PSI at idle when warm, will try 20W50 next time. Not that concerned, 10 PSI per 1,000 RPM is what I've been told before.
(2) Seems to have a slight knock when cold, probably rod bearings. May address at some point, probably when the truck tells me to.
Edit: Typical rear main seal leak like most. Forgot to mention that I replaced IAC. Also planning for cap + rotor pretty soon.
Two issue:
(1) Oil pressure drops to 10 PSI at idle when warm, will try 20W50 next time. Not that concerned, 10 PSI per 1,000 RPM is what I've been told before.
(2) Seems to have a slight knock when cold, probably rod bearings. May address at some point, probably when the truck tells me to.
Edit: Typical rear main seal leak like most. Forgot to mention that I replaced IAC. Also planning for cap + rotor pretty soon.
Elder User
Joined: Nov 2013
Posts: 524
Likes: 0
From: Maryland
Elder User
Joined: Sep 2012
Posts: 505
Likes: 7
I've attempted a "performance" rebuild on my last truck (1986 with the 4.9, intended to be a daily driver & replace a leased Kia). I learned a lot of lessons with that effort. It culminated with me selling it for about 1/3 what I put in it because we were building a house & the truck was destined to sit & languish for a couple years.
This time I'm keeping it as stock as possible. I intend to make improvements for reliability / cost savings, and your tip about the rear seal fits this approach perfectly.
Junior User
Joined: Jul 2005
Posts: 68
Likes: 0
4.9 litre mileage
My 92 F150 has 757, 500 km ( or 473,437 miles)on it now and still runs OK. It's getting tired so I think I'm going to rebuild it next year. It still only burns (or drips)a quart of oil between oil changes
