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> Running On 5 Cylinders!, AAARRRGGG...
Allan
post May 13 2008, 10:00 PM
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I need some diagnostic help.

Car started missing at low rpm's only.

I thought that it could be a clogged idle jet or poor connection on one of my plug wires (it fits kinda loose).

Pulled all the idle jets and cleaned them up. Crimped the plug connection so it fits better.

No luck. Now it's even worse. Not a miss anymore but what feels like a dead cylinder at low rpm's.

It seems to clear up at higher rpm's but the motor just doesn't seem to pull as strong.

Ideas please... (IMG:style_emoticons/default/smile.gif)
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Dr Evil
post May 13 2008, 10:11 PM
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Compression test (IMG:style_emoticons/default/sad.gif)
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Allan
post May 13 2008, 10:14 PM
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QUOTE(Dr Evil @ May 13 2008, 09:11 PM) *

Compression test (IMG:style_emoticons/default/sad.gif)


Wouldn't it be better to start with pulling plug wires to find out which cylinder isn't firing first?

I'm going to try that tomorrow, then I'll check all the plugs and see if one of the looks like it's fouling.
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Dr Evil
post May 13 2008, 10:19 PM
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Well, I would have figured you tried that first (IMG:style_emoticons/default/poke.gif) (IMG:style_emoticons/default/rolleyes.gif)
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Joe Bob
post May 13 2008, 10:22 PM
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AFTER you find the one not working, test the wire on the dead cylinder with a fluke....they do die ya know. Could also be the BERU connector end....ya know....the rubber cap thingy that fits over the plug.

Could be as simple as a fouled plug....
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Allan
post May 13 2008, 10:24 PM
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Not yet.

Just took the daughter out for ice cream in it and now it's too dark.
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J P Stein
post May 13 2008, 10:24 PM
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Heh....I can locate the missing cylinder, pull the offending plug, gap and install the new one in 3-4 minutes.....did so in the staging lanes of the 2006 Parade AX while carrying on a conversation with Steve Wiener on my choice of heat ranges.

As you can tell, this is not an uncommon occurrence. (IMG:style_emoticons/default/biggrin.gif)
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Joe Bob
post May 14 2008, 09:47 PM
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So????
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Allan
post May 14 2008, 10:11 PM
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QUOTE(Joe Mama @ May 14 2008, 08:47 PM) *

So????


Looks like it's gonna be tomorrow at lunch.

I ran off and left my high-voltage gloves at the office (i know I'm a wuss)... (IMG:style_emoticons/default/biggrin.gif)
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Joe Bob
post May 14 2008, 10:13 PM
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Prolly next to yer "Man Card".... (IMG:style_emoticons/default/piratenanner.gif)
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messix
post May 14 2008, 10:21 PM
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"high-voltage gloves " (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)

i don't care you ya are thats funny!!!! (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)
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Smitty911
post May 14 2008, 11:15 PM
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What's the problem you have one more cylinder running than I have. LOL

No help sorry.

Smitty
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Spoke
post May 14 2008, 11:20 PM
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On my 4 cylinder engine, I found the non-firing cylinder by running the engine a bit then touching the 4 exhaust pipes to find the cold or not-so-hot one. Takes out all the guess work of finding a dead cylinder.
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sww914
post May 14 2008, 11:36 PM
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Even though you've cleaned all of the idle jets you still can't rule it out. I've had times when one would repeatedly clog and another time where one had a very thin flake of something that would turn one way and open the flow and then turn another and allow the car to idle again. After you think that they're all clean and they're all installed you can loosen each jet holder, one by one, about 1/2-3/4 turn. If it stays the same or runs worse, that jet is clean. If it cleans up and idles well, that jet is clogged. It's a really quick way to check your work.
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Gint
post May 15 2008, 06:59 AM
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(IMG:style_emoticons/default/agree.gif) BTDT myself. Little flaky crap that kept reappearing and clogging a jet after it had just been cleaned.
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Allan
post May 15 2008, 07:10 PM
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QUOTE(messix @ May 14 2008, 09:21 PM) *

"high-voltage gloves " (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)

i don't care you ya are thats funny!!!! (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)


You thought I was kidding? (IMG:style_emoticons/default/huh.gif)


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Allan
post May 15 2008, 07:12 PM
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Anyway, I have narrowed it down to the #2 cylinder.

Pulled that plug wire and the motor didn't change a bit. All the rest of them were firing well.

Before I did that I changed all the plug wires with new Magnecore's

I'm gonna swap the plug now and see if that helps.
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SGB
post May 15 2008, 07:21 PM
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Magnacores drove me crazy. They would not secure well to the plug tip. I went back to old style push-on over the threads bosch wiires.
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Root_Werks
post May 15 2008, 07:23 PM
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If it smooths out at upper RPM's, it's probably your idle circut. Take that idle jet back out with the car running and tap your finger over the hole. I know it sounds kinda dorky, but your finger will create a little pressure/vac while you tap it. Doesn't always work. But often I have done that, put the jet back in and the car idles perfect again.

(IMG:style_emoticons/default/confused24.gif)
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Allan
post May 15 2008, 07:54 PM
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Well, that was a big waste of time. (IMG:style_emoticons/default/mad.gif)

Re-cleaned the idle jet for that cylinder and I even tried Dan's suggestion and it didn't help.

How can I tell if it's the idle circuit and not just the jet?
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