lack of power when cold under load.

sliq · Postby **sliq** » Sat Mar 20, 2010 10:48 am

where are u located?

Alex · Postby **Alex** » Sat Mar 20, 2010 10:51 pm

base idle speed?

Steampunk · Postby **Steampunk** » Sun Mar 21, 2010 12:45 am

Alex wrote:base idle speed?

it idles at 600-700RPM? If so, then of course it will idle uneven as idle speed should be approx 900-1,000RPM

Check your timing.

Description of plugs seems like they are ok.

Is the car revving but not moving accordingly? If so, then maybe its a slipping clutch? But at 150,000km it should still be ok unless it's hard a harsh life.

Alex · Postby **Alex** » Sun Mar 21, 2010 11:12 am

http://www.miata.net/garage/ignition.html#idle
Give that a try for fixing the idle

not sure about the lack of power though

93_Clubman · Postby **93_Clubman** » Sun Mar 21, 2010 1:11 pm

glenn evans wrote:On further investigation i have discovered that the breather tube that runs from the back of the inlet manifold to the exhaust is missing on the parts list this is the egr pipe which is located under the egr valve could this be the problem?

Apparently it's possible, but not legal, to remove EGR, if it's done properly. Does yours appear to have been disabled or removed properly, or is it just a missing pipe?
http://www.miataturbo.net/forum/t15625/
Google "miata egr removal" or "miata egr delete" for more info.

93_Clubman · Postby **93_Clubman** » Mon Mar 22, 2010 12:07 pm

glenn evans wrote:looks like the egr tube has just been removed, i should plug it?

If there's a possibility it could vent to the engine bay you should either replace it or plug it. If the problem persists, worth keeping in mind that NB8A coilpacks often require replacement.