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burning plastic smell?

 
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Old 09-30-2010, 01:00 AM
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burning plastic smell?

so i just changed the spark plugs and wires on my prelude.
the check engine light went away for a day, (and the car ran beautifully!) but then came back.
the only thing is, it runs worse now! also, i noticed that there is a smell coming from the engine bay. it smells like burning plastic.
im pretty sure i didnt mess up the spark plugs or anything or the plug wires.
(btw whats the correct firing order?) i took all the plug wires out at the same time like a damn rookie. =(
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Old 09-30-2010, 01:38 AM
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Re: burning plastic smell?

well since you say it runs worse then you most likely mixed the wires positions but not 100% sure since i didn't see you do it.
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Old 09-30-2010, 01:51 AM
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Re: burning plastic smell?

I might've.
anyone know the correct firing order? or which sequence the plug wires go in?
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Old 09-30-2010, 07:51 AM
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Re: burning plastic smell?

The firing order is 1-3-4-2
Piston 1 is the driver side, fairly simple dude, if you cnt figure it out just google it, and click images and there will be a pic for you.
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Old 09-30-2010, 11:14 AM
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Re: burning plastic smell?

This pic highlights the coolant bleed valve location but it also shows what wire attaches where by the number on my leads. Obviously the shorted wire is the cloest etc....

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Old 09-30-2010, 01:42 PM
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Re: burning plastic smell?

Quote:
Originally Posted by thegreatkhan90 View Post
so i just changed the spark plugs and wires on my prelude.
the check engine light went away for a day, (and the car ran beautifully!) but then came back.
the only thing is, it runs worse now! also, i noticed that there is a smell coming from the engine bay. it smells like burning plastic.
im pretty sure i didnt mess up the spark plugs or anything or the plug wires.
(btw whats the correct firing order?) i took all the plug wires out at the same time like a damn rookie. =(
When doing tune ups I usually replace the wires first one at a time, that way you don't get the dizzy cap mixed up, another way to know is look at the cap and it tells you in a small stamped number not sure if this is labeling the cylinder or not (this is why I change one wire out at a time), as the cylinders start left to right 1,2,3,4. I think the firing order if I can remember is 1, 4, 2, 3. Check that as well as I am not too sure.

Now once you have all the wires replaced just way them up out of the way to replace your plugs (check your gap some plug manufactures you won't have a way to set the gap) I think ours is .045.

Now once you have the plugs in and wires connected (make sure the wires you push them in until you feel that metallic click to know that you have metal on metal contact) This might be your problem.

If you have something out of timing your really messed up and the wrong plug is firing and there isn't any gas there yet, this would cause horrible running conditions if even one plug is hooked up wrong, two wrong might not even run.

Now if your satisfied that you have everything hooked up right then its your chance to replace the rotor button and cap. Take the new cap do a one for one swap on the wires (so that you don't get these mixed up) then take the old one and lay it down or out of the way, then lay the new cap with wires attached to the side then get yourself a good flathead screwdriver to loosen the rotor button screw to replace the rotor.

If you didn't replace your cap and rotor as well you might have worn spots on either one of these and it would contribute to your poor running conditions.

Now if you have a code and its a misfire in only a designated cylinder then if you followed the above steps then you pretty much eliminated spark (electrical) one other way to test this is pull that plug, plug it into the spark plug wire and hold the wire on the shielding and lay it close to something metal to see it spark. Also recommend you hold the wire with only one hand this is a safety measure.

If it sparks then you have to turn towards fuel, if you didn't get spark now you'll be troubleshooting your ignition coil.

By this time you have pretty much eliminated electrical, unless you have battery and grounding problems (thats a bit beyond the scope of this maintenance)

now if by this time you still have a code then try swapping injectors on that cylinder to see if the code migrates to the cylinder that you moved that injector to, if so then you have a cogged injector. If not then you have to refer to 5th Gen section and look for Top Engine Clean.

You may or may not have top engine sludge (carbon deposits) so bad on your valves that they aren't seating properly and causing a misfire.

This worked in my case and a couple others that has done this, try to have a experienced friend with you while you introduce seafoam to the intake, its important you keep it running and get ready for the smoke out the back end almost looks like you have blown a head gasket, if you know what that looks like. It's supposed to happen in this situation. The can recommends only 1/3 a can at a time then let sit for 5 to 10 minutes then take it for a drive.

I have also been doing research on the cleaning of the top of the engine and know why some cars need to more than others. In my case I was living close to work and school so alot of short trips here and there. This causes more carbon deposits on the vlaves as opposed to a car that gets ran more like 45 minutes to an hour on average. Another thing if you use alot of fuel injector cleaner on the short trip cars then the top engine carbons will build up even quicker using certain types of cleaners has an adverse effect on the top engine carbons. There are cleaners out there that you have to pay close attention to a certain ingredient that is used for the top engine carbon cleaning. So you don't want to use STP injector cleaner on a car that you make alot of short trips in. There is plenty of this stuff on the web, goggle has everything.

Sorry for the book, but I hope it will help others

Rob
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Old 09-30-2010, 01:46 PM
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Re: burning plastic smell?

Quote:
Originally Posted by Honda95 View Post
The firing order is 1-3-4-2
Piston 1 is the driver side, fairly simple dude, if you cnt figure it out just google it, and click images and there will be a pic for you.
Well this will have to be clarified as the dealer is telling me that 1 is the cylinder closest to the tranny Unless you have a JDM lude. That firing order does look familiar as I think I got it wrong.
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Old 09-30-2010, 05:01 PM
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Re: burning plastic smell?

That's how mine are wired I think but I also have a F20b instead of the H22 may be diff. Idk
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Old 09-30-2010, 05:47 PM
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Re: burning plastic smell?

that seafoam does make the engine blow out smoke...crazy & scary looking when it happens
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Old 09-30-2010, 10:04 PM
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Re: burning plastic smell?

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Originally Posted by dr2day View Post
that seafoam does make the engine blow out smoke...crazy & scary looking when it happens
Yeah totally, I think next time I'll do it at dusk or even a bit darker, my neighbors were pissed.
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Old 09-30-2010, 10:10 PM
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Re: burning plastic smell?

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Originally Posted by Rob View Post
Yeah totally, I think next time I'll do it at dusk or even a bit darker, my neighbors were pissed.
Yea I did it at autozone by the freeway. Huge cloud of smoke blew out toward the road. Any idea how ofton you can use it? I don't think I got all the deposit out and feeling the need to see smoke again.. I mean check for build up
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Old 09-30-2010, 10:32 PM
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Re: burning plastic smell?

Quote:
Originally Posted by dr2day View Post
Yea I did it at autozone by the freeway. Huge cloud of smoke blew out toward the road. Any idea how ofton you can use it? I don't think I got all the deposit out and feeling the need to see smoke again.. I mean check for build up
Not sure as the can said use as needed I think. But however good rule of thumb is use the 1/3 can for the intake another 1/3 for the tank and I heard the last 1/3 for the crankcase. I'm using some can of crap that NAPA sold me supposed to clean the up motor parts @ $20 a can it better even said to run it down to half tank and refill with gas and it will last that tank out too I think the can had 44K on the front of it...

BG 44K 2 Cans Power Enhancer Fuel Injector Cleaner: eBay Motors (item 330478134901 end time Oct-02-10 19:14:48 PDT)

Thats the stuff on eBay even. Plus the car needs to be run so plan a long trip not just a short trip.
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