1987 300DT 195K
Problems began after replacing metal and rubber fuel lines at tank. At first the car ran ok after replacing fuel lines, maybe 100 miles, then it had little to no acceleration, then I could not get the RPM’s over 1500 while in park, (idled well at this time) replaced fuel filters,Then it was slowly down hill with it running for a few seconds then would die and now does not start. Turns over nicely, and almost starts. I had the ALDA off and put it back ( did a 1 turn CCW) on and replaced plastic and rubber connections to and from the switchover valve. Doors open and lock per normal. There is a little air in the pre filter about as much when the car was running well. Can one test the fuel pump somehow if it is ok, or do they simply just quit and that’s it??? I probably had a lot of crap come out of the fuel tank when I emptied it. It flowed out very well and when I just did the pre filter fuel was coming out of the feed line as per normal. I also changed over the feed and return lines but I did that before I installed another pre filter, no change, put it back to original way. Pre filter had some dirt but I just replaced it. No leaks to be seen anywhere. I have not again replaced the spin on as it has maybe 4 miles on it…Still no start. Any ideas from someone…It is cool today here about 40F.

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1987 300 DT