Engine runs for a short while then quits.
I have a 1977 Dodge Power Wagon with a 360 engine. It starts right up and runs slow or
fast for a short while and then stops. If you try to start it again, it turns over but will not
start. If you let it sit for a bit, it will start and do the same thing. Have checked fuel lines
sounds like the mechanical pump has a torn diaphragm~
29 bucks~ https://www.google.com/shopping/product/7554443987361051192? sclient=psy- ab&q=1977++360+dodge+power+wagon+mechanical+fuel+pump&oq=19 77++360+dodge+power+wagon+mechanical+fuel+pump&pbx=1
think the heat riser and thermal choke is closing the butterfly faithfully~
my '73 Fury III had the 360~
You are describing the classic Chrysler ignition module failure, I always carried a spare in the trunk as you never knew when it was going to fail. I don't know why they always put them on the firewall right where the engine heat could really get to them, I redid the harness and moved them to the fender away from the heat source and they lasted a lot longer.
naaa if it were the BALLAST RESISTOR .... it wouldn't start at all ... that's the white porcelain rectangle thing ... the other thing is the ignition box .. NAPA used to sell a replacement ... P/N - TP 50 I think is the number it's been awhile so.... Oh yea they put the electronic ignition box on the firewall so it would stay DRY ... WET is worse than hot ... Hot +ign box = DRY ..... you could put a heat sink on it . PB
six-way power seats....the lap of luxury...quite literally~
Pete, I plugged helpful for you every chance I got...Yes, answer EVERY question to the best that Google has to offer....or info.com is badass as well, but goddamn it, this is what I do now...my wife doesn't want me wastin' time on the porn sites....am quite adept at machines and machinery...Drafter to ANSI Y-14.5 (not that anyone uses that) and am proficient at mechanical design....in the top 10 percent on the Armed Services Vocational Aptitude battery ASVAB and oil paint...nothing offensive~
actually did not want to be in the upper crusties, so I began again as operator_13, from when I was a yellow cab dispatcher in the late 80's~ why are you here? counterman? service writer? Tire buddy? brake lathe operator?
Ok, when it dies look down the carb air horn and work the throttle does it squirt fuel from the accelerator pump into the venturis ? .. if it does it's the ignition system ... if not it's fuel system and it might be water in the gas tank clogging the sock filter in the tank ... if ya ain't got any squirt at the carb after it dies you may get by with dumping a couple of bottles of HEAT in the gas tank .. also check at the fuel tank sending unit ( where the fuel line comes out of the tank ) there will be a short piece of rubber hose between the sending unit and the fuel line to the motor ... make sure it is not cracked or split (vacuum leak ) will break siphon of fuel from pump to tank.. check entire fuel line from tank sending unit to fuel pump for kinks or rusted pin holes . Any wet spots along the line would indicate a leak which on the suction side of the line will leak air into the line breaking the siphon of fuel from the tank to the pump... OK ? you said you checked the filter ? did you replace it ? otherwise you got to blow through it with low pressure (mouth ) Most people wont put a used fuel filter in their mouth and blow on it to see if it's clogged. did you ? . just buy a new one and let me know how you worked out .. One more tidbit , if it's that old and has never been overhauled the timing chain could be goin bad .. small block mopars have a ten inch cam to crank center to center distance so the timing chain compared to other motors is kinda long , when the chain stretches some it can jump teeth on the sprockets throwing the cam and ignition timing way off which would also make it run like you described ... could also be a cracked distributor cap or a worn out distributor reluctor or magnetic pickup coil . air gap on that is .008 to .010 thousands of an inch ( must use brass feeler gauge for correct feel ) how's that ROY ?
I also replaced the ignition module at fifteen years old...noticed the unit was "encapsulated" with a dow-corning clear insulation that made the electronics immobile and un-servicable~ first ever experience with "potted" electronics~
naaa , it's alright brother . would you have said anything if I had left you out ....I thought the only people to plug helpful were the ones with the problem .. hey I got my first mopar in 1973 when I was twelve years old . no offense man but the 340/360 have been one of my toys for 40 years .. quite frankly I just don't know what six way power seats have to do with this guy's problem ?
yah, sounds like you may have done this once or twice, Peter....old school...an old guy...yah man~ that '73 Fury III had an oil leak and the sister did not put any oil in there and the oil light went a flickerin' and the new owner put a new timing chain in that....divorced...disappeared from our world~ I was thinkin' heat-riser and butterfly choke as well...note operation...note that it's causing a rich condition...why else would it come back after waitin' a spell?~
ROY , I appreciate your feedback and you plugs ... I'm getting older now and I'm becoming a asshole ... some say ...sorry if I offended you ... PB
just a marvel as a little kid had hours of entertainment...this had the 360...that was the reminder of the joy of the fleshy '70s Chryslers~
hey ,what do you think that 'CUDA has in it ? 340 screemer baby
that's okay Peter, we all need a place to go with the pent-up aggression we all experience on our motorways~ have a little trouble being a "cool-cat"...listen to some music that cools me down~ http://vimeo.com/27420220
that's true if it's cold out or damp the carb could be icing up and cutting off the air . but after it warms a bit the ice won't come back ... and it should stay running .. either way the rest of the story now must be told by the power wagon owner 'cause we have done ALL we can ... YES ?
Bein' stuck at home with MS isn't something I'd recommend to anyone...it isn't that I can't do anything....it's just they won't let me~ sold my bicycle...no old cars to fix (wife has me in a MINI)....no one to play chess or some Jazz with...miserable musically...Clearlake is a musical desert~
short of gettin' in there and checkin' it out personally...we must look at the basics, air, fuel, spark, timing...cam timing....we seem to have air and spark, timing and valve timing....the fuel is the only sticking point....much easier when the IAT sensor does all the heavy lifting with it's compatriot the Block temp sensor knows how to enrichen the mix...this old time hardware can be a fuss~
Hey , I think your RIGHT ON THE MONEY ... the OLD DAYS are gone but I ain't fogot 'em and IT PISSES ME OFF TO THINK THAT MY GRAND KIDS WON'T EVER EVEN KNOW WHAT A CARBURETOR WAS LET ALONE HOW TO SPELL IT ...lol
HEY WHERE ARE YOU LOCATED ?
Who will ever forget the heat riser off the manifold with the B9 control robot arm duct into a thermal box that would open up to bring fresh air into the intake plenum only to meet a thermal heat-riser choke that would spin the butterfly valve closed combined with a "high-idle" on the carb link that should release when the engine comes up to temp....at least it is not like the old days when you've got two pullout levers like me '53 Chevy truck did, throttle and choke...six volt electrical...starter solenoid was your foot pressin on a piece of steel that would act like a solenoid~
Clearlake, California...where every day is a beautiful sunny day and every one seems to be a drunkard with missing teeth and tattoos and spend the whole day in their pajamas...even old guys...smokin' with cars that smoke and stink with mismatched body panels and broken or missing windows what drive tooo close to you so you've got to let them by so they won't go through the double yellow---~~
well, if I should ever make it out that way in my '69 charger or my 'cuda I will look you up and we can relive some of yesteryear..... two long black swervey lines at a time !!! PB
firstname.lastname@example.org is where you'll find me also Jay Qureshi on facebook~ There is one of those 'cudas not far on 9th street with the big back expensive window....that guy is poor and hardly drives it~
the miracle of Posi~
my 77 dodge doesnt have spark all new cap rotor plugs wires ignition module checked out good it sometimes starts
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