F150 with 302 engine

Anonymous-0 · Sep 30, 2012

Do the 1991s have the same issue with the timing gears that the older ones do? I've had 4 1970s and 1980s 302s/351Ws that all needed the timing set replaced due to the nylon coating coming off.

Lumpy · Sep 30, 2012

Yep! They never fixed that problem.

big fred · Sep 30, 2012

The 302 in my 95 F-150 was going strong at 247K miles when the tranny went south and I sold it to a wrecking yard. Engine didn't miss a beat in that time except when the O2 sensor needed replacing near the end of that time.

NEKS · Sep 30, 2012

Had a 74 club wagon van with 302 and never had any problems with timing gears.

brian brooks · Oct 1, 2012

In the late 80s they went back to the all steel3 piece timing set

RLA · Oct 1, 2012

Ford's new parts are a double roller chain &
all steel. Timing chains LOVE clean oil. The
customers I've had over the Years ( 37 ) who
changed engine oil @ 3000 miles Never had
timing chain & gear issues. The folks who
5K to 7500 miles would need a new chain
at 90,000 to 100000 miles.. For those of
you who say OIL is better now & shouldn't
be changed @ 3000 miles, when it come's
to timing chains I disagree... I feel the
same is more of a issue today with all these
over head came engines with 2 or more chains.

Anonymous-0 · Oct 1, 2012

I know the replacement part is all steel (seems like it always has been), but is the original gear set on a 1991 the nylon coated POS?

I agree with the oil changes at 3K miles, for the cost its just cheap insurance - especially on older carbed engines and throttle body fuel injection.

Anonymous-0 · Oct 1, 2012

I also agree on 3k oil changes on engines with more than one timing chain. Usually those rely upon hydraulic chain tensioners to keep the timing chain tight. The dirtier the oil the less tension the hydraulic tensioner can apply, the looser the chain the more wear it causes.

Ask Chrysler and Toyota about that.

RLA · Oct 1, 2012

It might have been in 91? Back alott of years
& the parts Book doesn't really say? I thought
in the car line they went to all still in 1990
But now all the # have been updated to dual
roller chain?? So I guess?? If it has a single
older style chain it could very well have the
plastic coated gear on the cam....

Anonymous-0 · Oct 1, 2012

So basically I need to open it up.

I'm getting the occassional miss at extremely slow idle that makes me think the timing chain has some slack in it. Runs great at higher RPMs with centrifugal force taking the slack out of it - just like all the others. Everyone of them would eventually get worse until it jumped time or had some other issue that popped up.

Any way to check this without tearing into it?

mite-help · Oct 1, 2012

yes, it can be checked somewhat by turning crank-pully back/forth-you can pretty much feel when cam catches up--usually a bunch of degrees on worn chain--

RLA · Oct 1, 2012

Yes What MITE HELP suggest's would tell you
alott..... On How much Slop the chain has...

Make sure you check the Pickup coil the
module plugs into.

GVSII · Oct 1, 2012

I've put a pile of miles on "302's" in many pickups and cars and even one boat. Never lost a timeing set. But I did change oil/filter often.

F150 with 302 engine

Anonymous-0

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Lumpy

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big fred

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NEKS

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brian brooks

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RLA

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Anonymous-0

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Anonymous-0

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RLA

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Anonymous-0

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mite-help

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GVSII

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