Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance A little help on intake manifold cleaning

Regarding the FAQ for cleaning the manifolds w/o removing them...

DemonSVT mentioned:
Remember you HAVE TO have the IMRC plates open when doing the "suck down" cleaning or it's completely pointless!


Whats the best way to ping the secondaries open when doing the procedure? Just get on the throttle until past 3500 RPM? Wouldn't that make metering the flow of detergent into the vaccuum lines pretty hard?

Or is there any easier way of pinging them open?

Thanks in advance!

I know its not what you want, but:

With a 98, you'll likely see little to no gain (other than tricking yourself in to thinking there was some) from the "on-the-car" method. You'd do much better to have torn the UIM/LIM off (20 minutes???) and clean it manually. From there on, you can use the vacuum method every oil change to keep it clean.


Anyway.

You could pull the secondaries back at the spring and zip tie them, or something... (will run rough, I am sure, but you'll be there to hold the TB open to keep it going)
Much better than racing your engine at 4000 rpm..


Ray

Where is the spring located and how do I get to it?

Thanks.

Check out the UIM/LIM rebuild how-to in the maintenance forum faq. it has the secondaries shown, connected to the LIM.

Ray