Octane Boost Additives
Thread Starter
|
Laughing Gas
Joined: Nov 2003
Posts: 794
Likes: 3
Octane Boost Additives
I have a spark knockin
97 4.6 4x4 w/ 189k miles.
Its not the brand of gas
its not the plugs
its not the air filter
I was woundering what ya'll thought about trying some octane boost before trying 89 or 93 octane gasoline?
97 4.6 4x4 w/ 189k miles.
Its not the brand of gas
its not the plugs
its not the air filter
I was woundering what ya'll thought about trying some octane boost before trying 89 or 93 octane gasoline?
Thread Starter
|
Laughing Gas
Joined: Nov 2003
Posts: 794
Likes: 3
Alright that sounds good, the MAF is clean i believe.
I am about a day away from needin gas. I will fill up with 93 and see if the spark knock goes away and see if anything in the truck improves.
I am about a day away from needin gas. I will fill up with 93 and see if the spark knock goes away and see if anything in the truck improves.
Senior User
Joined: Apr 2003
Posts: 485
Likes: 0
From: DIXIE
You can't tell if the MAF is clean just by looking. CLEAN IT.
Then check or verify that you have already checked/changed the following...
Throttle body: EGR PORTS on 90degree elbow (definately in the top 5)
Trottle body should be cleaned as well
EGR: Ensure that the egr valve is operating properly, remove it, clean it and see if the plunger moves freely
Fuel Filter: How long since you changed it?
Carbon: Sea-foam the engine by slowly pouring 1/2 bottle of seafoam into the PCV valve or hose, allow the engine to stall or have a friend turn it off when you reach half a bottle. Let it sit for 15-20 minutes, go for a VERY BRISK drive employing many WOT opportunities. The smoke pouring out of the tailpipe will be carbon. The bottle says to pour the remainder in the fuel tank but whenever I have done this in the past, it pings for the remainder of that tank.
Then check or verify that you have already checked/changed the following...
Throttle body: EGR PORTS on 90degree elbow (definately in the top 5)
Trottle body should be cleaned as well
EGR: Ensure that the egr valve is operating properly, remove it, clean it and see if the plunger moves freely
Fuel Filter: How long since you changed it?
Carbon: Sea-foam the engine by slowly pouring 1/2 bottle of seafoam into the PCV valve or hose, allow the engine to stall or have a friend turn it off when you reach half a bottle. Let it sit for 15-20 minutes, go for a VERY BRISK drive employing many WOT opportunities. The smoke pouring out of the tailpipe will be carbon. The bottle says to pour the remainder in the fuel tank but whenever I have done this in the past, it pings for the remainder of that tank.
Thread
Thread Starter
Forum
Replies
Last Post
leroys4wd
Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150
35
Mar 24, 2006 07:59 AM
