What's up fellas'

My car is acting up unfortunately. I was having a little fun with another car down the road the other night. I took the car up to about 100-110, shifting around the 6,000-6,500 mark (car is minorly modded, only mods are air filter, HKS bov, and the free mods).

Once the hit the 100-110 mark, I decided to let off since I had a pretty decent gap ahead of the other car. Upon braking for the next intersection way head, my car started vibrating violently. My RPMs were hunting up and down sporadically and the needle was very, very low when I was at a complete stop. The car started to "put put put" (misfiring perhaps?) and was fixing to die at any moment. I had to keep the engine revved up with the gas pedal to keep it from dying. Once the light turn greened, I started to accelerate, but the entire car continued to shake/vibrate violently when I pushed down on the gas. I limped it home and the car died within a few seconds after parking it. I started it back up and the car seems to still be misfiring very badly, shakes roughly, and the exhaust is producing the "put put put" syndrome. I popped the hood and can see the valve cover vibrating pretty badly.

I would think it most likely is fouled spark plugs and or wires. My concern though is, in addition to the aforementioned syptoms, I hear a pretty loud slapping noise coming from the valve cover. It shouldn't be too severe I suppose?

The car has about 90,000 miles on it now. (Mobil 1 synthetic is used). I didn't bottom the car out or anything and the oil level seems okay. I'll check tomorrow for any severe leaks, etc.

Any input is greatly appreciated. I suppose I can try to limp it over to a service station, but I don't want to risk damaging the motor more (if any), is occuring to it.

Thanks for your all's time.

 

When's the last time you changed the spark plugs? Change them (NGK6ES) and see if that helps. Or maybe the crank pulley is about ready to go, it's usually at around that mileage when they go. Check it and see.

Hope it's just a minor issue.

 

I really, really hope it's the plugs, lol. I'm going to try changing them out on Saturday and see what happens. I'd hate to have to shell out a shit load of cash to get this problem fixed.

Do you think a fouled plug or two would cause the engine to vibrate very rough and make the entire car vibrate during acceleration. I'm assuming those are the symptoms of the engine misfiring due to a fouled plug or two. I assume the damage should be minor, if any correct?

 

It could be a fouled plug causing it to do that. I'm very keen on keeping up with maintenance on my car, so I never had that happen before, but a friend of mine had similar symptoms as yours and we changed the plugs and that was all it was, lol. He has a 240 with a SR20, though.

Change the plugs first (gapped 0.028-0.030 inch w/ the NGK6ES) and see. Maybe try changing the wires, too. Also, have you changed your fuel filter lately? Could be clogged. Did you check the crank pulley, see if it's about to seperate? Just do the little things first and work your way up til it's solved.

 

Sounds like a vaccum leak to me or as stated before possibly an engine misfire. Do you have any check engine lights on? If so take it to Advanced Auto parts and they will plug it in for free it it tells you if you have had misfires and whatnot.

 

Okay, update here...

I replaced the plugs with NGK BP6ES's. I went to 5 different places and none of them stocked the NGK 6ES's.

The car still has the same problems. The engine won't even stay fired up anymore. It will attempt to turn over, but won't.

Or it will turn over for a moment (with an extreme vibration from the motor itself, which can be felt throughout the whole car) and eventually die within a few seconds. It sounds like the flywheel is clunking rather loudly in the tranny also, but the flywheel should still be okay.

Yes, the Check Engine Light is on, but I don't have a scanner and unfortunately, the car is pretty much in an undrivable state. I can keep the motor alive if I step on the gas some, but the engine is very, very rough, and I'm afraid I'm going to do more harm than good if I keep attempting to start it.

The wires still seemed to be in okay shape (no tears in the boots or anything).

What else do you guys think could be causing the problem? I don't see any vacuum leaks of any sort. Do you all really think that an O2 sensor or clogged fuel filter could actually be the culprit of the problem?

Damn...I'm stumped. Anybody wanna come help a brother out? I'll buy some beer, food, whatever.

Thanks again guys.

 

i have a scanner if needed that tells you what the check engine light is on for

but im at work til 11pm

 

i blew an itc pipe before and had a similar problem??????????????? try checking and making sure all the pipes are connected and none are seperated.................

 

Hey Bigsteve,

I did check the piping, everything seems to be intact.

 

ok,cause when it happened to me all it took was for the piping to slip out slightly from the coupling.......good luck, you might be able to call twincam performance ask for drew or damon maybe they can help you out 727-934-7033