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Mail From: jbodoni (John Bodoni)

Man, this has been the longest project of my life!

The title says it all. After replacing a burnt exhaust valve and getting my
engine back together - a process that took five months - the biggest problem
I'm left with is an ill-behaved idle. It's "hunting" from ~1200 up to
~1800, then dropping back down to ~1200 for a few seconds before repeating.
It does not do this all the time, of course. It also likes to drop down
well below the 800 mark and act like it's gonna die - and this is after
replacing the plug wires.

Any suggestions? I've tweaked the throttle body adjustment, didn't really
seem to do too much.

John
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Mail From: Larry (Larry Alster)

Sure sounds like a vacuum leak to me. Start checking the complete intake using an unlit propane torch.


Larry

White Knight 1991 Crystal White #99 CSP
Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo
Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger
Whooosh 2004 Titanium Mazdaspeed MX-5

LowCountry Miata lowcountrymiataclub.net
Masters Miata
RAGS 074
----- Original Message -----
From: John Bodoni
To: Miata List
Sent: Tuesday, July 24, 2007 8:25 PM
Subject: [Miata] No steam, still idling poorly


Man, this has been the longest project of my life!

The title says it all. After replacing a burnt exhaust valve and getting my engine back together - a process that took five months - the biggest problem I'm left with is an ill-behaved idle. It's "hunting" from ~1200 up to ~1800, then dropping back down to ~1200 for a few seconds before repeating. It does not do this all the time, of course. It also likes to drop down well below the 800 mark and act like it's gonna die - and this is after replacing the plug wires.

Any suggestions? I've tweaked the throttle body adjustment, didn't really seem to do too much.

John





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