 Running rough, Car running too rich |
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| warrenoliver |
 Oct 10 2011, 07:25 PM
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#1
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Member  Group: Members Posts: 363 Joined: 11-November 06 From: McFarland, Wisconsin Member No.: 7,199 Region Association: Upper MidWest  |
My '73, 2.0, Djet has been running great all summer! I noticed lately that it smells like gas when running and my mileage is poorer than usual. Yesterday when cruising at freeway speed it began running differently and would occasionally buck or shudder. It would run OK if I gave it more gas or let off on it a little. Today, it really smells like gas when running and sometimes runs really rough or wants to stall. When it runs rough, it smokes black smoke (running rich).
I put a vacuum tester on the MPS and can draw no vacuum. Is that how the MPS is tested? I had engine off with the ignition off when I tried to pull a vacuum. If the MPS is bad, will that cause the rich/rough running? I have placed a WTB in the classifieds. Any ideas on where to get a good used one? Help, I wanna drive a little more before we get the white stuff. Warrenoliver |
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| somd914 |
Oct 10 2011, 08:12 PM
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#2
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Member Group: Members Posts: 1,171 Joined: 21-February 11 From: Southern Maryland Member No.: 12,741 Region Association: MidAtlantic Region |
Yes, testing is simply drawing a vacuum down with with engine off to I think 16" (don' recall for sure), and it should hold vacuum for several minutes (I have read anywhere from 5 mins to 20 mins). Concur that you need a new (used) MPS.
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Posts in this topic
warrenoliver Running rough Oct 10 2011, 07:25 PM
dlee6204 If the MPS isn't holding vacuum then that is l... Oct 10 2011, 07:42 PM somd914 Another thought as I have been down a very similar... Oct 11 2011, 03:32 AM
Spoke When you say "draws no vacuum" for the M... Oct 11 2011, 07:38 AM warrenoliver
When you say "draws no vacuum" for the ... Oct 11 2011, 06:05 PM |
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