390FE chatter when going up hill or bogged down
Junior User
Joined: Dec 2008
Posts: 92
Likes: 0
From: Montana
Also, with the design of the FE, you can have an intake leak and therefore a vacuum leak and not have a coolant leak. The FE intake gaskets are finicky, especially the Fel-Pro Print-o-leaks.
Check you plugs for oil fouling. Adjust your timing properly with a timing light already.
Josh
Check you plugs for oil fouling. Adjust your timing properly with a timing light already.
Josh
Thread Starter
|
Elder User
Joined: Apr 2006
Posts: 649
Likes: 0
I see no sign on coolant, so what would I check? I will check the timing.
Logistics Pro
Joined: Oct 2005
Posts: 3,785
Likes: 4
From: Mddl A MexCans
As well as a timing light or your assuming there as well.
Unless the cam is WAY radical, the 8-12 will be fine, but the vac gauge will assist in getting idle, timing, fuel mix setup correctly. Why guess at it ?
Posting Guru
Joined: Aug 2001
Posts: 2,117
Likes: 0
From: Evanston, WY
-Scouder
Thread Starter
|
Elder User
Joined: Apr 2006
Posts: 649
Likes: 0
Well it was obviously replaced because it was leaking. This is what stumbles me. I know what a ping sounds like and this is not a ping noise. A ping described by me, sounds like popcorn popping. This is more of a chatter/clatter when going up hill in 4th gear. It does not make this noise at all any other time. There is no sign of a leak. I will get the vacuum tool.
Thread Starter
|
Elder User
Joined: Apr 2006
Posts: 649
Likes: 0
Without using a vac gauge your assuming, use it. Cheap tool that is worth it's weight in gold. How to Use and Interpret a Vacuum Gauge
As well as a timing light or your assuming there as well.
Unless the cam is WAY radical, the 8-12 will be fine, but the vac gauge will assist in getting idle, timing, fuel mix setup correctly. Why guess at it ?
As well as a timing light or your assuming there as well.
Unless the cam is WAY radical, the 8-12 will be fine, but the vac gauge will assist in getting idle, timing, fuel mix setup correctly. Why guess at it ?
You're right. Nice tool. I'll have to get my hands on one.
Posting Guru
Joined: Aug 2001
Posts: 2,117
Likes: 0
From: Evanston, WY
Well it was obviously replaced because it was leaking. This is what stumbles me. I know what a ping sounds like and this is not a ping noise. A ping described by me, sounds like popcorn popping. This is more of a chatter/clatter when going up hill in 4th gear. It does not make this noise at all any other time. There is no sign of a leak. I will get the vacuum tool.
Too much cylinder pressure (compression)
Too low octane
Too much heat
Lean fuel mixture (which could definately be caused by a leak)
Advanced timing
Timing may become irrelevant with pre-ignition, since the fuel mixture ignites on it's own.
Ping can sound like a tic, barely noticeable over the normal sound of the engine, or in it's more common form, sound like someone hitting the engine block or cylinder heads with a small hammer very quickly. Incidentally, that is exactly what is happening to your piston top during ping. It is being hit with a very large, very high temperature hammer, and it will go through the top of the piston if it is done long enough. One second is enough in a highly tuned race engine to make a compression release in the top of a piston.
If you determine that you don't have a leak, and you don't have a timing problem, then do a test and put in a full tank of premium fuel to see if it goes away.
-Scouder
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Junior User
Joined: Dec 2008
Posts: 92
Likes: 0
From: Montana
Well it was obviously replaced because it was leaking. This is what stumbles me. I know what a ping sounds like and this is not a ping noise. A ping described by me, sounds like popcorn popping. This is more of a chatter/clatter when going up hill in 4th gear. It does not make this noise at all any other time. There is no sign of a leak. I will get the vacuum tool.
Thread Starter
|
Elder User
Joined: Apr 2006
Posts: 649
Likes: 0
Kinda like shaking a coffee can full of marbles, right? It sounds like pretty severe pinging. It's the carb gasket or the intake gasket. Fix it or you'll end up with advanced engine wear, burning holes in pistons, cracked pistons, overheating and associated problems such as cracked heads, cracked/broken ring landings. But the good thing is your exhaust pipe will be as clean as the metal it's made of, no soot at all.
Junior User
Joined: Dec 2008
Posts: 92
Likes: 0
From: Montana
I am going to bet that neither fix the problem.
It didn't need high octane fuel before, and the timing was fine at factory spec before, so why would changing the intake gasket change that? I'm afraid you'll be taking your intake off and redoing it.
It didn't need high octane fuel before, and the timing was fine at factory spec before, so why would changing the intake gasket change that? I'm afraid you'll be taking your intake off and redoing it.
Mountain Pass
Joined: Mar 2008
Posts: 119
Likes: 1
ping
Hey 1974SuperCabF250. Did you happen to read the postings? He has said that he timed it by ear! The dizzy has to come out to change the intake on a FE so it could very well not be set to Factory settings.
I would get a timing light and set it properly myself but until you do it would be wise to retard the timing a bit so you dont damage anything. It could still be numerous things making the noise but I would do that first and then see if i could detect exactly where the noise is coming from.
I would get a timing light and set it properly myself but until you do it would be wise to retard the timing a bit so you dont damage anything. It could still be numerous things making the noise but I would do that first and then see if i could detect exactly where the noise is coming from.
More Turbo
Joined: Apr 2007
Posts: 572
Likes: 3
Heres a new idea how about the rocker arm bolts, did you get them mixed up? There is one certain bolt that goes in a certain hole that controls the oil flow to the rockers. Wrong bolt=little to no oil=valve chatter.
The cheap way to check for a vacuum leak, get a can of starting fluid or brake cleaner and spray around the intake and carb base. If you have a change in idle, theres your leak.
Get a timing lite on it right away. Set it to stock specs right away! Your timing may be too far advanced which causes damage, or it may be too restarted. I time by ear too, but I start out at the 8 deg. BTDC and go from there, advancing it little by little until it has too much.
The cheap way to check for a vacuum leak, get a can of starting fluid or brake cleaner and spray around the intake and carb base. If you have a change in idle, theres your leak.
Get a timing lite on it right away. Set it to stock specs right away! Your timing may be too far advanced which causes damage, or it may be too restarted. I time by ear too, but I start out at the 8 deg. BTDC and go from there, advancing it little by little until it has too much.
Thread Starter
|
Elder User
Joined: Apr 2006
Posts: 649
Likes: 0
Hey 1974SuperCabF250. Did you happen to read the postings? He has said that he timed it by ear! The dizzy has to come out to change the intake on a FE so it could very well not be set to Factory settings.
I would get a timing light and set it properly myself but until you do it would be wise to retard the timing a bit so you dont damage anything. It could still be numerous things making the noise but I would do that first and then see if i could detect exactly where the noise is coming from.
I would get a timing light and set it properly myself but until you do it would be wise to retard the timing a bit so you dont damage anything. It could still be numerous things making the noise but I would do that first and then see if i could detect exactly where the noise is coming from.