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running lean (I think)

Old 10-14-2003, 07:06 PM
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Default running lean (I think)

I have a crx dx with intake and exuahst with no cat. I changed the spark plugs and noticed they were white so I got new ones and they turned white too. I havn't noticed my car pinging but it's hard to hear over the exahust. Sometimes my car misses at low rpm and sounds like a machine gun but it only does this about 1 time every 2 months. Is there something I can do about this like removing a coolent sensor or something.
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Old 10-14-2003, 07:27 PM
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Default Re:running lean (I think)

What is your motor and is it boosted? What octane gas are you using? Check your timing. Most likely it is either your timing or you are being a cheap *** and using 87 octane.
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Old 10-14-2003, 07:31 PM
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Default Re:running lean (I think)

My car is not boosted yet. and i'm using 87 octane how's that make a difference
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Old 10-14-2003, 07:36 PM
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Default Re:running lean (I think)

Oh boy.

Ok, I'll make this short.

The lower the octane rating, the more prone to detonation. Gas with a higher octane rating will be harder to detonate, which is what you are hearing. This is why we use race gas at the track. Assuming you know what detonation is, since you are using low octane gas and it is easier to ignite and pre-detonate. Timing may also play a part in this problem. Check it. It might be too advanced.
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Old 10-14-2003, 07:44 PM
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Default Re:running lean (I think)

If it's a stock dx, the car is an econobox that was ment to run on 87 octane. Just retard the timming abit and it should be fine.

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Old 10-14-2003, 08:07 PM
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Default Re:running lean (I think)

Uh, all Hondas are econo-boxes(except for maybe the S2000).

They also say that the Ford V10 was made to run on 87 octane, but if you try it your motor will ping like a mother ******.
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Old 10-15-2003, 05:29 AM
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Default Re:running lean (I think)

first, check your spark plug gaps also. and yeah, retard the distributor. if your car isnt boosted, i wouldnt worry about the 87 octane you using.
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Old 10-15-2003, 05:37 PM
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Default Re:running lean (I think)

two possibilities. Your rings are shot and you have excessive blowby which is dumping oil into your intake. I think I might have this problem and it would cause you to ping. If this is the case, you are going to need to increase the octane/retard the timing regardless of what the engine in new concdition should take. Or you could install a catch can which is something I intend to try. Or your injectors are plugged and that is causing you to run lean. Try running a couple of tanks of fuel injector cleaner thru it and see if that helps. I hear running better gas (BP/Chevron, etc) helps keep them clean.
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Old 10-15-2003, 08:31 PM
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Default Re:running lean (I think)

I think my rings are good because my car doesn't smoke at all and doesn't use any oil
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Old 10-15-2003, 08:35 PM
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Default Re:running lean (I think)

don't use ---- gas.
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