Lifter hammers when engine warms up
#1
Lifter hammers when engine warms up
Ok so, I've heard plenty of lifter noise when engines are cold, but this particular 390 has a lifter that sounds like it's sticking once the engine is warmed up - the noise it makes is like the standard 'tick', but is much much louder. Does anyone know what could cause this, and how I can fix it without tearing the top-end down? The engine is in a 76 f150, I don't know if it was put in or if it came from the factory that way - (I think the cab has been changed) But I was told it's a fairly recent rebuild.. doesn't have any blow-by anyway. It runs silent when it's cold, then it's starts with a small tick as it gradually warms up which turns into a very loud tick shortly there after. I've thought about running some additive through the oil, but not sure on that one.
As far as I know it's stock with the exception of an Edlebrock intake that says "Performer 390" on it and a Carter 4 barrel carb.
Any help would be appreciated!
As far as I know it's stock with the exception of an Edlebrock intake that says "Performer 390" on it and a Carter 4 barrel carb.
Any help would be appreciated!
#2
#4
#5
#6
Join Date: Aug 2003
Location: **** hole San Jose ca.
Posts: 7,592
Likes: 0
Received 9 Likes
on
9 Posts
You say you did some tinkering like what ?? To now gives you an idea to pull the motor down. It maybe your fuel pump making all that noise. I've had one once that, I would have bet money on the was a rod pounding. after a inspection on the bearing i pulled the fuel pump and sure enough it was in need of replacing. That was the end of my noise..
orich
orich
#7
I had water leaking from the thermostat housing, so I fixed that, started it back again to let it warm up to see if the leak stopped, and the rear main started leaking pretty badly. It's also got some bearing noise at about 2500 rpm, and since I don't want to mess with trying to change the main seal with it in the truck, I'm just going to pull it, and inspect the rod and main bearings when I have the motor out; as well as the fuel pump, etc. In other words, I don't believe what I was told about the condition of the engine, so I'm going to go through it while it's out - which isn't a problem, since I'll be doing all the body work at that time as well, and figure out why my xfer case is stuck, and replace some missing parts in the shift linkage so it'll go into park.
fwiw, it has an in-line fuel pressure gauge next to the carb, it sits at about 8 psi
fwiw, it has an in-line fuel pressure gauge next to the carb, it sits at about 8 psi
Trending Topics
#8
Thread
Thread Starter
Forum
Replies
Last Post
73F100*8Mile
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
87
03-15-2007 07:33 PM