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Old February 12th 08, 10:58 PM posted to rec.autos.makers.honda
85miles
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Posts: 35
Default Smelly Exhaust, Oil stains on bumper, what could this be? Civicproblems.

On Feb 9, 3:54 pm, wrote:
> On Feb 6, 6:23 pm, 85miles > wrote:
>
>
>
> > On Feb 2, 4:18 am, wrote:

>
> > > On Feb 2, 12:22 am, 85miles > wrote:

>
> > > > On Feb 1, 5:37 am, wrote:

>
> > > > > On Jan 28, 5:45 pm, 85miles > wrote:

>
> > > > > > Hi

>
> > > > > > I have a 98 Honda Civic with 245,000 KM.

>
> > > > > > I am trying to figure out this problem.

>
> > > > > > My exhaust kind of smells stinky, kind of a mild smell of rotten eggs,
> > > > > > and also my bumper just above my exhaust is full of black oil
> > > > > > deposits.

>
> > > > > > I've been researching for answers and I think i have it narrowed down
> > > > > > to either; Oxygen sensor, Fuel pressure regulator, or a" charcoal
> > > > > > canister valve" which is under the chassis next to the gas tank.

>
> > > > > > I have had a check engine pop on about 2 months ago now. Got it
> > > > > > scanned and this code: P1457 Evap emissions code (Check Engine Light)
> > > > > > came up. Which could just be from me overfilling my gas tank.

>
> > > > > > I want to mention that sometimes my idle is rough. It happens about a
> > > > > > minute after driving and only lasts for about 10 seconds then goes
> > > > > > away until i start my car again.

>
> > > > > > Anyways please someone help me narrow this down, I know it can be more
> > > > > > than one thing.

>
> > > > > > But lets fix the smelly exhaust and burning of oil problem, I'm tired
> > > > > > of cleaning the oil stains off my rear bumper!

>
> > > > > > Thanks guys.

>
> > > > > oil rarely makes it to the bumper, even if one (or more) of the
> > > > > cylinder(s) has worn rings, oil will show up as blue smoke

>
> > > > > what you saw in the bumper was soot from unburnt fuel. you can be
> > > > > sure that the valves and combustion chambers are pretty gunked up
> > > > > now...

>
> > > > > replace the gas cap first (use OEM) and see if that'll make a
> > > > > difference

>
> > > > if its not the gas cap would it be the charcoal canister

>
> > > definitely!! a good the gas cap means the finger is now poiting to the
> > > charcoal canister, as the cause of the CEL, that is

>
> > > Now a charcoal canister may get saturated as a result of an over-
> > > filled gas tank, or engine flooding. And i am sure that a defective
> > > charcoal canister is the result, not the cause of your problem, which
> > > is excess fuel on the intake, most likely a flooded condition

>
> > > If you can start and run in this condition then i guess your ignition
> > > components are strong enough. O2 sensor may still be good, but i'm
> > > thinking that the injectors may be leaking, causing the engine to be
> > > flooded over night

>
> > thanks for the reply.

>
> > But if it flooded over night wouldn't it be hard to start in the
> > morning? She has no trouble starting, she revs fine but on occasion
> > the cars idle drops and bounces and she almost stalls, but so far has
> > never stalled.

>
> > Also, I notice a smell from the exhaust but it i'snt like rotten
> > eggs ....it is a different stink. And there's a black stain on my
> > bumper.

>
> it's not likely that all four injectors are leaking at the same time,
> unless the fuel pressure regulator goes amock
>
> you can start a Honda I4 engines with 3 cylinders running, the one
> that gets flooded will struggle back to life later on and causes rough
> idle momentarily and paints your bumper black while doing so.. That's
> my theory for this scenario
>
> I'm thinking one cylinder is affected. To find out which one is
> flooded, disconnect the plug wires one at a time and start the car,
> similar to the method of finding out the fouled plug without having to
> remove all.


Ok thank you ill try that out, I guess it wont hurt to do a
compression test while i'm at it.
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