Not rent, You can use it. Just pick up the freight. John Hervey -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx]On Behalf Of content22207 Sent: Thursday, May 26, 2005 3:03 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: hot outside, no start discussion The only accurate way to check fuel system pressures is with a high PSI gauge & fittings (I think John Hervey rents one), but there are some low tech diagnostics you can perform in the interim: First & foremost, when you lower the air sensor plate manually (engine off), does it provide resistance and does the metering piston make a high pitched weeping sound, or is it floppy and the metering piston silent? Resistance means there was at least some residual system pressure (which you have now released). The same test can be performed with an injector pulled if you want to see if there was enough presure to make it spray once. Jumping the RPM relay forces the fuel pump to spin. Immediately after doing so, system pressure should be the same as during cranking for the same tests. Thermal Time Switch is temperature opened, but usually by hot coolant. Simply put a continuity meter between the line in (White/Red per wiring diagram) and the block to see if sunlight is doing the same. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, kjc <ckevinj@xxxx> wrote: > > Hmm... interesting. The only trouble I ever have starting is if it is > sun-soaked for a couple of hours. And doing the cable switch, AKA > hot-start quick-fix, does the trick. > > So I should be checking the check valve on the fuel pump or primary > pressure regulator next. What about the TTS (thermo time switch)? I > suppose I should patch into it and see what it is telling the system > cold, vs. running hot, vs. sun-soaked hot. > > How does one check the PPR? Checking the fuel pump check valve would > be last resort and may as well replace it all when I get in there. > Thought, I looked into the PO records, the fuel pump combo kit was > done 7.5 years ago (with the accumulator). I don't see that (assuming > it is 102808) in parts replaced back 12/97, and I know I haven't done > that. > > > -Kevin > #4687 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/