Tire shop horror story! Please help!
#21
Originally Posted by Sideways,Jan 11 2008, 04:23 PM
Iridium or not 96,000 miles could lead to worn out plugs.
Replace the plugs.
You should take pictures for all of us to see. They are due within the next 10,000 miles according to the factory but most owners change them out a little more often.
Replace the plugs.
You should take pictures for all of us to see. They are due within the next 10,000 miles according to the factory but most owners change them out a little more often.
a miss fire is a detonation where the mixture ignites prematurely before the piston reaches its desired mark before TDC. the only thing that would cause this in our cars is a coil malfunction or a bad crank angle/cam sensor. not an old plug.
when plugs get old they just dont ignite as well and are not as efficent...mileage goes down...stuff like that. almost unnoticeable unless you swap in a new set of plugs.
if you want to test the plugs, go to your friends house thats a geek, and borrow a multimeter and see what teh resistance is. then (and be brave)disconnect the fuel pump, start the car and let it die (so you know it wont run but will turn over) remove a plug, attach teh butt end to the coil pack and hold the electrode end about an inch from the shock tower strut bolt...NOT A PAINTED SURFACE. no ahve you friend crank the motor over. it should arc.
CAUTION: DO NOT TOUCH THE CAR WITH YOUR BODY WHILE DOING THIS!!!!!!! the guy cranking the car is fine but if you are holding the plug DO NOT TOUCH TEH CAR!!!! YOU WILL GET SHOCKED and believe me...it hurts, mostly your arm but your pride hurts just barely less.
as for above...i would defenitely ahve a compression and leak down test done. then check your retainers to see if a valve looks like its dropped (cracked retainer)
if thats the case, and a valve dropped its because someone missed a gear and over revved it.
good luck man. take no prisioners.
#22
Registered User
Originally Posted by street_ruler,Jan 11 2008, 09:22 PM
...
a miss fire is a detonation where the mixture ignites prematurely before the piston reaches its desired mark before TDC. the only thing that would cause this in our cars is a coil malfunction or a bad crank angle/cam sensor. not an old plug..
a miss fire is a detonation where the mixture ignites prematurely before the piston reaches its desired mark before TDC. the only thing that would cause this in our cars is a coil malfunction or a bad crank angle/cam sensor. not an old plug..
#25
yah sorry detonation is the "technical" word for a misfire. people say it sounds like marbles in a coffee can rattling around but i think its more of a "denser" sound. like the marbles in a 4 inch thick walled coffee can. its actually the piston slamming into the walls of the cylinder and bouncing off
#26
Registered User
Originally Posted by street_ruler,Jan 11 2008, 09:24 PM
yah sorry detonation is the "technical" word for a misfire.
detonation=pre-ignition=knock (same thing)
misfire=unburnt fuel (no combustion or detonation whatsoever)
BTW. I'm pretty sure stock S2000 plugs are Platinum, not Iridium unless Honda has changed something.
To the OP. I suppose it is possible that someone mechanically over-reved your car by "money shifting" to a lower gear while attempting to upshift to a higher gear. This can cause extensive damage to the valve's. If the valve's or valvetrain are damaged the cylinders will fail to seal correctly. If the cylinders do not seal correctly they cannot pressurize the air/fuel mixture enough to facilitate any detonation/combustion, and cause severe misfiring. If your CEL is flashing you should not be running the engine at all. This is not only because a misifre can dump unburned fuel into the exhaust and catalytic converter possibly causing damage to the Cat. Converter or O2 sensor. Unburned fuel can also "wash out" a cylinder and cause scoring which can also lead to loss of compression.
Also I'm not sure I would just clear the ECM. The freeze frame/snapshot can tell some stuff about the conditions when the DTC occured.
I hate reading stories like this...
Good Luck.
EDIT: Disclaimer, Many things can cause a misfire; Fuel, Plugs, Coils, Injectors, valves, etc. I was trying to describe what I considered to be a possible, or dare I even say probable scenario.
Originally Posted by kix
If I were you I would assume it was overreved. Go get it checked out.
Originally Posted by Sideways
Replace the plugs.
#27
Registered User
Originally Posted by E_ME_22,Jan 11 2008, 11:14 AM
car was running great when I dropped it off. When I picked up my s2k the check engine light was on flashing and the car was sputtering
Did you bring the Check Engine Light to anyones attention before driving off?
Did they bring the Check Engine Light to your attention when you dropped the car off?
I added the second question as an afterthought because they are both relevant. I understand that they could not have pointed it out because it was not on.
#28
Registered User
Originally Posted by E_ME_22,Jan 11 2008, 01:28 PM
Well the car is still at there shop and they refuse to take any responsiblity there is really no way for me to prove that them driving the car caused the problem. I am kind of at a loss, I have no idea what to do, I guess I will start with changing the plugs, then move to the coil's, then from there head towards the injectors, to the crank sensor....I am praying that the plugs are my suspect, but that is wishful thinking. Those coils' are so dang expensive, anyone know anywhere I can get them cheaper than the dealer ?
#30
Originally Posted by SenderGreen,Jan 11 2008, 11:40 PM
Really? I thought misfire meant lack of detonation.
detonation=pre-ignition=knock (same thing)
misfire=unburnt fuel (no combustion or detonation whatsoever)
BTW. I'm pretty sure stock S2000 plugs are Platinum, not Iridium unless Honda has changed something.
detonation=pre-ignition=knock (same thing)
misfire=unburnt fuel (no combustion or detonation whatsoever)
BTW. I'm pretty sure stock S2000 plugs are Platinum, not Iridium unless Honda has changed something.
and if it did "misfire" with your definition then it would be constantly running on 3 cyl. if you want to knwo what that feels like go for a ride in your friends diessel truck. its insanely rough and if you cant tell something is wrong...you got bigger problems
but no, a miss fire is a pre-ignition, knock, detonation ect.
and as for iridium vs platnum....never run a platnum plug in a honda...period.
and unless they are balls to the wall nice platnums they shouldnt be 80 bucks for a set. thats iridium territory. the essiest way to tell is if the electrode looks like a needle or something else. needle=iridium (i still stand by the price being more of an indicator though) anything else = platnum, copper...ect.