what kinds problems can speark plugs give you?
what kind of problems can off timing give you?

my car has been getting me nervous... when i start it cold and take off the motor reves but no acceleration then when i floor it it takes off like normal, then does that again with backfiring... couple of pops and after about 5 min of driving it goes away and doesnt do it anymore.....

 

ur timing is most likey needing to be adjusted. when was the last time the plugs were changed?

 

Which plugs are you using? What is your gap?
What are your mods?

 

i changed them last summer, had the bosch platinum 4 put in... worked great, mods are umm but typical bolt ons... CAI bbk equal lenght shorties full custom jba exaust, blah blah blah. no idea what the gaps are, standard?

 

Its probably just your timing being off. But improperly gapped spark plugs changes your timing as well. I would set your timing correctly then go from there.

 

how does timing just go off alone?!?

 

i gapped my plugs wrong once and my car'd backfire under load. took them out and regapped them with a gap tool and it was perfect. I use autolites, cheap but effective.

 

bosch platinum 4[:'(] junk

 

I had Bosch platinum 4's since I installed my blower a couple years ago.
Now I am using Autolite Copper (around $11 for all 8 of them at Autozone I think).
My car seems to like these much better.
I wouldn't have believed it if I hadn't done it for myself, but Autolites are a better match for these V8's.

You will want to use Autolite Copper 25 with a gap of .052-.054 if you are pretty much stock.

I went with one colder 24's because of the blower and highway use and gapped them at .45,
although the guy who tuned my car says to gap them at .35 which I will fix.

 

what about the ford motorsport plugs? do i really have to gap them? or they come gapped?