this is a 86 f250 and if the previous owner is to be believed has 160,000 miles
i have had it for about 10 years and the engine has been perfect
normally when i first crank it it idles up and rattles like crazy for a few minutes
a couple of days ago i was about 5 miles from home and at about 40 mph it started rattling like crazy
sounded just like it does when i cold crank it but not idled up
also it had no power and excess smoke
i left it till the next day
i cold cranked it and all was normal
i drove a bit and it idled down and got quiet
then about 30 seconds later it started rattling again
this morning i disconnected the wire to what tsb 94-5-11 calls the housing pressure cold advance - hpca
when i cranked it it was still rattling
i waited for it to warm enough for the idle solenoid to de-energize
i drove it a bit and it never stopped rattling
also no power and lots of smoke
i used a jumper wire to check the hpca and i could hear it clicking
suggestion are greatly appreciated
i have had it for about 10 years and the engine has been perfect
normally when i first crank it it idles up and rattles like crazy for a few minutes
a couple of days ago i was about 5 miles from home and at about 40 mph it started rattling like crazy
sounded just like it does when i cold crank it but not idled up
also it had no power and excess smoke
i left it till the next day
i cold cranked it and all was normal
i drove a bit and it idled down and got quiet
then about 30 seconds later it started rattling again
this morning i disconnected the wire to what tsb 94-5-11 calls the housing pressure cold advance - hpca
when i cranked it it was still rattling
i waited for it to warm enough for the idle solenoid to de-energize
i drove it a bit and it never stopped rattling
also no power and lots of smoke
i used a jumper wire to check the hpca and i could hear it clicking
suggestion are greatly appreciated