There’s nothing more basic than the fact that an engine is just a big air pump
I have been diagnosing/troubleshooting/not having any success my 99 dodge dakota 3.9l engine.
It failed smog in november by 5 ppm hydrocarbon and I am just now getting a round tuit.
It has had an intermittent misfire for a few years. As in it works just fine for a long time and then comes back. And now it's got a rough idle.
Anyway in the course of working on it I found the above article and I thought it was good enough to share.
Enjoy.
Vern, it's a shame that Chrysler doesn't have a history of workhorse 6-cylinder engines to draw on for their pickups (the good old Slant-Six, anyone?). Surely the base block for their 215, 245 and 265 straight-sixes that they made in Australia for many years would be in the corporate history, somewhere? They were quite frugal with juice, especially in their ELB series, completely proof against misfiring in the wet season and had instant power on tap (the naturally-aspirated 265 Hemi had 302hp in factory trim).
ReplyDeletehell, I like to get my hands on a old 292 GMC engine again.
Deletea true workhorse of a engine. as you said, easy on gas and great torque with them. why did they ever stop making them ?
The 300ci Ford inline 6. They just... wouldn't... die!
DeleteI see that the Germans have used the Ford 300c.i. six-banger on repro Great War aeroplanes, like the Rumpler. An application like that demands 100% reliability.
Deleteand most guys have no idea just useful they really are.
ReplyDeletebefore FI, they where used all the time. and if you had 2 or more carbs on it. you better use a vacuum gauge !
there use to be a series in the old Hot Rod magazine that did a set of books on tune up and repair tools. I bought the set back in the early 1970's. but let it out to a "friend" and NEVER got that one book back. and every SUN machine I worked on had a vacuum hoop up on it.
Spark plugs, it's them every time I work on a boat engine, especially champion . Don't know nothing about Mopar.
ReplyDeleteIf you can isolate it down to a cylinder, swap out the ignition coil for that cylinder. I betcha that's the cause, especially an intermittent like that. It's probably just good enough to make the jump MOST of the time...
ReplyDelete