engine rattle under acceleration???

[EliteConcept]

hey guys got a quick query for ya
on my 92 when i accelerate sometimes , i mostly notice it when i am going uphill on the road i notice a soft rattle that seems to be coming from the engine. If i had to guess i'd say its right behidn the firewall....
its sorta perportional to the speed at which i'm going up hill

rather weird to me

any suggestions?

thanks
ryan

 

[DeagleDave]

sounds like pinging man. try some higher octane gas or do a search for "sea foam" or "power foam"

 

[EliteConcept]

really.
I've never heard a pinging engine before so i wouldn't know it if i had one..hehhehee

intresting....thanks!

 

[DeagleDave]

your vehicle is same as mine, i would also recommend getting the injectors professionally clean, chaning the fuel filter and looking at some new plugs/wires if it's been a while since they've been changed. i use jacobs wires and motorcraft double platinum plugs and they seem to work well for me.

 

[EliteConcept]

i have
new fuel filter
new plugs
new wires

however the injectors have not been profesionally cleaned

 

[Bashman]

Before spending the money on getting your injectors cleaned, I would buy a can of electronic cleaner (one that leaves no residue) and clean your MAF sensor. After cleaning it, remember to disconnect your battery for at least 5-10 minutes to reset the computer. Reconnect it and let the engine idle for another 5 minutes then take it for a drive. I did this to mine and it has been ping free for over 6 months running on regular un-leaded. Total cost was under $15.00 for cleaner and torx driver. There is a good write up on this procedure in the "List of Useful Threads" forum.

 

[EliteConcept]

do that yearly...each spring i clean the MAS

thanks though

 

[Jason_25]

Elite, pick up some seafoam and run it through there. You can find it at NAPA or carquest.

 

[EliteConcept]

seafoam seems to be a big thing around here, but i've never heard of it...
whats it do?

 

[Jason_25]

It cleans the built up gunk and carbon in your intake and cylinders. It has been shown that carbon build up leads to detonation.

 

[DeagleDave]

well i ran powerfoam. then recently as i was doing the intake manifold gaskets and had the lower intake out i realized that there is a black layer of crap in the intake. even bath after bath in degreased and various solvents wouldn't take it all off. including carbuerator cleaner. so i really can't imagine that sea foam or power foam really does much. but give it a shot it's only a couple of bucks.