I have an 1988 mercury grand marquis 5.0l and I was wanting to see which vacuum lines were important not worried about the climate control or the smog pump just what will make it run right
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Gotta have the big fat one going to the brake booster, the ones going to the PCV valve, and MAP sensor. Also the thin red plastic one going to the fuel PSI regulator on the fuel rail is a keeper. All the lines in the big bundle of plastic lines going to the passenger fender can be eliminated for testing. Just be sure to cap off the source.
The ones that most often go bad, leak, and cause trouble are the MAP sensor line and the EVAP line (comes out from under the RF corner of the upper intake). Unfortunately to properly replace these you have to remove the upper intake, if the original spring clamps are still on them.Pete ::::>>> resident LED addict and CFI defector LED bulb replacements
'LTD HPP' 85 Vic (my rusty baby) '06 Honda Reflex 250cc 'Baileys' 91 Vic (faded cream puff) ClifFord 'ODB' 88 P72 (SOLD) '77 LTDII (RIP)
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85HPP's most noteworthy mods: CFI to SEFI conversion w/HO upperstuff headers & flowmasters P71 airbox Towncar seats LED dash light-show center console w/5 gauge package LED 3rd brake light 3G alternator mini starter washer/coolant bottle upgrade Towncar power trunk pull underhood fuse/relay box 16" HPP wheels - police swaybars w/poly rubbers - budget Alpine driven 10 speaker stereo -
All of them. There are only about a dozen. A leak is a leak, no matter what system it is in. Just replace them all and be done with it.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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