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Good morning, everybody. Posting with my phone so I can use voice recognition, much easier than typing right now. Surgery went well, but obviously my right arm is a little sore.
My parents are flying in from New Hampshire to lend a hand around the house, and they're also looking forward to seeing the kids. Hope everybody enjoys the cold, rainy day!
Good morning, everybody. Posting with my phone so I can use voice recognition, much easier than typing right now. Surgery went well, but obviously my right arm is a little sore.
My parents are flying in from New Hampshire to lend a hand around the house, and they're also looking forward to seeing the kids. Hope everybody enjoys the cold, rainy day!
Good morning Tom! Glad to hear surgery went well.
Originally Posted by DieselCamper01
Good morning guys.
That is stupid Troy. Good luck!
1st showing logged in for tomorrow.
We will probably stay in the camper at the campground in Monticello.
Pulled the codes from Jake's truck.
Man I got writers cramp!!!
One of the codes was a misfire on #3. It had been running bad for a few thousand miles or so I guess.
When I pulled the coil pack I found that both spark plug wells had water (rain water) in them.
I blew out everything and WD40'd it and then blew it out again.
I pulled out one of the two plugs and found it wet with fuel. Checked the gap and found it to be roughly .070" and it's supposed to be .040". Gee I wonder why it was missing?
I pulled a throttle closed compression test and got 165 PSI. From what I read on the WWW, this is about right.
I put it back together the way I found it and will wait to see what the bank says they want to do with it. I may buy it for salvage price just because it was Jake's truck and then putz with it.
I think I can fix pretty much anything that is wrong with it.
Thoughts ---
First - I find it odd that it has two spark plugs per cylinder (5.9 Hemi)
Second - recommended spark plug changes are at 30k miles (almost unheard of since the 70's)
Thoughts ---
First - I find it odd that it has two spark plugs per cylinder (5.9 Hemi)
Second - recommended spark plug changes are at 30k miles (almost unheard of since the 70's)
Interesting, Randy...was he not keeping up with maintenance?
Lots of modern gas engines use two plugs per cylinder. The 4.7L Magnum V8, the Ford 6.2L V8, and lots of motorcycle engines have two per hole. It's a 5.7L Hemi BTW, not to be confused with the 5.9L Magnum it replaced.
Jake was broke much of the time and barely able to make payments and rent.
I guess as long as it would start-run-get him to work, he just let it slide..
Yeah, I fat fingered the displacement. It is the 5.7 Hemi. I was not aware of the other multi-plugged engines. I had only seen it before on aircraft (along with dual magnetos) and dragsters.
Ah... Thanks Dave....
And here I thought they might be doing something Hi-Tek and doing staggered sparks to make for a longer ignition sequence..
How problematic are these MDS systems on that vintage (2008) cars?
Not to start an argument or anything, but there are a lot of vehicles with cylinder deactivation that only use one plug per cylinder. And there are numerous examples of engines with two plugs per cylinder that never had cylinder deactivation (2011+ 6.2L Super Duty). The Hemi engine has always had two spark plugs, but cylinder deactivation was added several years after it was introduced for the '03 model year.
From Allpar.com:
“Cryptojoe” wrote: “The extra plug fires during the power stroke to more fully burn the hydrocarbons. ... the second ignition allows additional power in the down stroke while lowering the need for restrictive catalyst plates in the converter. ... [using] dual fired plugs on each cylinder allows the firing to take place closer to top dead center, and then again when the piston is on the back side of the power stroke.”
Patrick added: “The extra set of spark plugs on the HEMI and on previous engines are designed to reduce NOx and ozone emissions before a catalyst is needed. They add some horsepower, but not much.”
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