spark plug - Mitsubishi Evolution Forums: Mitsubishi Lancer Forum

V8KillaLL · 10-14-2007, 05:28 PM

i just replaced the spark plug and now when im at fulll throttle it feels like im going to stall like if the car is laggingi just wanted to know how to fix the issue please someone help me

Warrtalon · 10-14-2007, 05:43 PM

What do you mean by _the_ spark plug? We have 4 spark plugs, so are you saying you changed all 4 spark plugs? What exact brand and part number did you install, and what was the gap you used?

As for the problem, can you explain it in MUCH more detail?

- what gear?
- what rpm?
- what boost?
- what exactly do you mean by "going to stall" and "lagging"?
- what do you hear?

V8KillaLL · 10-14-2007, 06:02 PM

i used the ac delco spark plugs but i dont know the part number i replaced all four of them.It happen in every gear and it only happens when im at full throttle.I dont know what boost it is cuz i dont have a boost gauge. It only happens when im in full throttle and when im cruising at high rpm's it doesnt do it and when i stomp on it feels like it im getting whip lash

JustDSM · 10-14-2007, 06:13 PM

Get yourself some NGK BPR7ES gapped about .026"

Get a boost gauge too

V8KillaLL · 10-14-2007, 06:15 PM

are they really good spark plugs? the boost gauge thats a must that should come in a month

JustDSM · 10-14-2007, 07:18 PM

They're alot better than the AC Delco plugs, that's for sure!

Coevopower · 10-14-2007, 07:25 PM

Thats ur problem u went with cheap ol sparks plugs, mitsubishis along with nissans do it alot when you dont use NGK spark plugs. not sure why, but its pretty much a must to use NGK7.

Warrtalon · 10-14-2007, 07:32 PM

Whoa, what the hell? AC Delco????? No way!

Yeah, get NGK BPR7ES from Autozone or Advanced Auto (or wherever) and gap them to .026. Is there a reason you changed the plugs, though? Don't need to change them unless they've fouled out...

V8KillaLL · 10-15-2007, 12:32 PM

one really fouled out

yangs4ever4g63 · 11-01-2007, 10:09 PM

I installed my ngk spark plugs awhile ago... wasn't sure what model and number but they were a later model then the stock ones. Never installed spark plugs in before so I just took the old ones out and put the new ones in. Was there all to it? Its in tight so far. Just waiting to put my clutch in in the future. Projext_Yang4g63