Hi Im new to the group but my truck isnt.I bought it new in 87 and
have purchased a 2001 Wrangler which has given me the ability to put
the ole dodge back in order again.
What Ive got going is 4x4 long bed that has an engine with 210,000
miles. No major engine work. The timing chain has never been replaced.
no top end or lower rebuilds The fuel injectors where replaced about
5000 miles ago.
Symtoms:
When you whack the throttle wide open she dies. If you feather the gas
pedal you can get the truck up to speed but still have total loss of
power. It backfires thru the throttlebody when you accelerate hard
also. The exhaust also sounds like it may be backfiring but its hard
to tell since the tail pipe is missing. Can't belive it I've never
replaced any exhaust components since new and the thing has gone thru
wisconsin road salting for almost 15 years!
Observations:
1 Full tank of good gas
2 vaccuum pressure is aprox 22 inches of mercury? pretty steady
although its only about 20 when idling. gun the engine she slows back
down and its about 22 inches again and will hold there.
3 New Plugs plug wires rotor and cap.
4 timing looks ok advances properly but i didnt follow factory
guidelines. Put the light on and dialed her in at about 750 RPM.
5 not a bad idle for 210,000 miles farily smooth
6 checked most of the electrical connections reseated them.
7 removed oxegen sensor. looked ok didnt do factory test as
outlined in shop manual tan in color no deposits.
8 old plugs showed signs of cold fouling ie light tan in color
yet sooty in apperance. no signs of black smoke from the tail pipe
like she was burning to rich more like incomplete combustion?
9 didnt check the fuel pressure yet heading out to the garage
tonight :-) Cracked open the return fitting to the gas tank at the
throttle body gas was pressent.
10 havent noticed the whoosh sound from the gas tank went I open
up the cap. Lack of pressure a bad sign?
11 noticed a connection on top of the fuel pump with a little
cap that looks like a tire valve stem cap. Well anyway this nipple or
whatever was wet but I also noticed this after i over filled the gas
tank since the fuel gauge hasnt worked for about the last 100,000
miles
12 no signs of oil fouling on plugs. Havnt done a compression
test.
13 tappet noise. always had it
14 oil pressure all of a sudden drops then comes back up. Thats
what the gauge says. True reading? The service manual talked about a
bushing under the oil sending unit that may need to be checked to see
if its seated to its proper depth.
Am I wasting my time on this tired motor? Jasper engines will retail a
motor for $2165.00 Plus my engine Is that a good way to go? Will they
discount off this list price or am i better off rebuilding my old
motor.? Seems like they have a pretty good warranty. 3 years 75,000
miles? Thanks for any help you people can offer. Im love this stupid
truck :-|
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