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P1800 ES 1800 1973

posted by  Chris Mullet on  Sun Aug 18 17:06 CST 2019
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last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

OK. If you can’t remove the CSV then disconnect the hose, plug the hose, and see if it has a good effect on you pressure leak-down rate.

As a secondary test you can connect a piece of good quality clear hose to the CSV, fill the hose with gas, apply constant air pressure of ~30 psi behind the gas, and see if the fuel disappears through the valve.

About the MPS... disconnect the vac hose from the intake and suck, suck, suck on the hose. You should be able to hear the diaphragm inside the MPS being pulled down. You should be able to suck the diaphragm all the way to where it stops and it shouldn’t leak any air (proven by placing ones tongue on the end of the hose). If it won’t hold a vacuum then it’s toast and you need to make friends with Planetman (Eric) for a replacement. Even if it does hold vacuum its no guarantee that it’s reading correctly but I’m pretty sure most MPS failures are due to leaking diaphragms.

Please don’t give up on the d-jet. Too many of them have been converted to carbs for little reason. It’s not a perfect system but.....






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