| From | Message |
redcavyguy
Dodge Dakota
JOIN HERE
3/13/2004
22:38:55
|
 Subject: 318 lacks power when put in gear!
IP: Logged
Message:
well i just got done with swapping in a 85' 318 in my 87 dak all of it is done. now the problem I have is that when you put it gear and push the gas it just wants to creap. even when you slam the gas down. the timming is correct. is it possible it isnt getting enough fuel or also could the carb be screwed up. it just picked up the motor at the junkyard a couple of weeks ago. so im nit sure how long this motor has been sitting. any help. thanks in advance.
|
gen1dak
Dodge Dakota
JOIN HERE
3/13/2004
22:53:23
|  RE: 318 lacks power when put in gear!
IP: Logged
Message:
Does it run smoothly or miss when you're trying to go?
|
Sephiroth
Dodge Dakota
JOIN HERE
3/14/2004
19:07:34
|  RE: 318 lacks power when put in gear!
IP: Logged
Message:
Check your transmission fluid lately? When a hose broke on my old '92 Dak and leaked out, I could rev the engine to high levels, but the clutch wouldn't grab. Thank God I was near my local gas-station/garage when it finally stopped.
|
redcavyguy
Dodge Dakota
JOIN HERE
3/14/2004
23:35:40
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
when i test drive it down the road it misses all through the rpm range. i swapped out carbs with my old 3.9 even though its a smaller carb and now it will actually go but theres still something going on with the timming it seems like. theres no egr on it. has msd ignition coil electronic distributor all of the correct vaccum lines are hooked up and the ones no longer needed because of egr, air pump, etc. are pluged. i have timmed it many times at different degrees. could it be possible the timming chain jumped. how bad would it be, as in missing. it feels like my old 3.9 but kinda slower and the whole missing thing. you romp on it and it doesnt pick up like it should. againg the whole missing thing. also yes my tranny has enough fluid.
|
redcavyguy
Dodge Dakota
JOIN HERE
3/15/2004
00:31:05
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
also i forgot to mention the reason i swapped carbs is to see if the original carb on the 318 was the problem. it just wanted to creap and now with the 3.9 carb on it, it will run alot smoother but still misses. it goes down the road now though
|
redcavyguy
Dodge Dakota
JOIN HERE
3/15/2004
00:46:20
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
also i forgot to mention the reason i swapped carbs is to see if the original carb on the 318 was the problem. it just wanted to creap and now with the 3.9 carb on it, it will run alot smoother but still misses. it goes down the road now though
|
gen1dak
Dodge Dakota
JOIN HERE
3/15/2004
19:25:45
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Sounds like you have a pretty serious vacuum leak somewhere. I'd look at a bad seal with the intake.
If it were a jumped timing gear/chain issue, it wouldn't improve with a carb change. Since the smaller carb improved things, that would tend to indicate a vacuum issue. The smaller carb generates a stronger vacuum signal, which covers part of the vacuum loss from wherever the leak is. Go around pulling a single vacuum line at a time and monitor the engine behavior. You should notice a change in the idle quality with each hose. If you pull one and it doesn't change, that may point to the leak, or at least narrow it down, but a very small hose may not be enough to upset things. Other sources that could do this would be a bad head gasket or a leaking brake master cylinder booster.
|
redcavyguy
Dodge Dakota
JOIN HERE
3/16/2004
00:05:42
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
ok checked all the vaccum lines. everything is good on that part. is it possible the electronic distrbutor i used off my 3.9 isnt allowing the engine to fire right on all cylinders?
|
jd
Dodge Dakota
JOIN HERE
3/16/2004
00:34:10
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
maybe the dist. does it utilize the shutter wheel under the rotor??? or is it older
jd
|
Sephiroth
Dodge Dakota
JOIN HERE
3/16/2004
02:06:00
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Tell me, does the engine rev up to normal RPMs, but just not go very fast?
|
nate
Dodge Dakota
JOIN HERE
3/16/2004
07:56:38
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
maybe check the timing and give it a little advance.
|
redcavyguy
Dodge Dakota
JOIN HERE
3/16/2004
19:08:19
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
the engine revs up fine, no problems there. its just when your trying to drive it, thats when she misses and dogs. im not sure what you mean about the shutter wheel under the rotor and i have also timmed it in advance and retarted it also with no luck there.
|
RAMDAKOTA
Dodge Dakota
JOIN HERE
3/17/2004
12:13:59
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
How do you change the distributor to a 3.9 without knowing about the internals (shutter wheel or magnetic pickups). If you just put the 3.9 distributor in the 318 then you don't have spark going to all cylinders. Did you just put the 318 didtributor cap on the 3.9 distributor? Did you try to put the 318 distributor on?
|
redcavyguy
Dodge Dakota
JOIN HERE
3/17/2004
18:33:27
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
i tried the 318 distibutor and got no spark. theres to wires to hook up in this one. im not positive but those two wires are a hot and tach? am i correct. which ones are which on the distributor theres black and gray.
|
gen1dak
Dodge Dakota
JOIN HERE
3/17/2004
21:22:34
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Okay, so the vacuum lines are okay. What about the other things I listed? The lines may be fine, but that doesn't mean you don't have a vacuum leak.
|
Blowndakota
Dodge Dakota
JOIN HERE
3/17/2004
22:10:16
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
From What I understand from Dodge, if you swap a 3.9 wih a 5.2 everything that is 3.9 has to go.With this thing not being fuel injected.I don't beleive it has a computer on it.Check your firing order,pull the plugs and check them.Do a compression check and then put a vac gauge on it.All the lines might look good but if you have an intake leak or even a cracked intake.Good luck!!!!
|
RAMDAKOTA
Dodge Dakota
JOIN HERE
3/18/2004
16:37:55
|  RE: 318 lacks power when put in gear!
IP: Logged
Message:
I don't know what the wires are exactly. I don't have a schematic. Surely someone here knows.
You can't use the 3.9 distributor without changing the internals to the 5.2 (318) internals. Really lucky you haven't blown it up yet LOL. If you use the 3.9 without changing the pick-ups (internals) then it will only fire on 6 cylinders. I'm surprised it works as well as you say it does. I guess they are basically the same firing order but I don't know really. I have a 99 so I don't think things are the same.
|
gen1dak
Dodge Dakota
JOIN HERE
3/18/2004
19:10:37
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Okay, I have to ask. If it revs fine in park, how could if be firing on six cylinders, or missing in general if the timing is off?
|
RAMDAKOTA
Dodge Dakota
JOIN HERE
3/19/2004
19:05:49
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Yeah good question. well, it's just a fact you have to change the internals to match the V8. There's only six points in the 3.9 distributor. Usually, six magnetic pickups or six slots in the wheeel that tells the computer when to fire the plugs. The eight cylinder has ummm eight.
|
gen1dak
Dodge Dakota
JOIN HERE
3/19/2004
20:50:07
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
Thanks, but I don't, ummmm, need a math lesson. My point is, it would not rev easily in park and act up in drive if the distributor was still set up for a "6". It'd hit six times, and it'd miss terribly no matter where the gear selector was. If it was set up for 8 cylinders, and it's hitting on all eight in park, it should hit on all eight when in drive. Granted, there might be something else wrong with the distributor. Could be reversed polarity on the coil. Look at the problem. If it's hitting on all eight, would it magically revert to "6" when put in drive?
|
redcavyguy
Dodge Dakota
JOIN HERE
3/20/2004
02:05:01
| RE: 318 lacks power when put in gear!
IP: Logged
Message:
if you pull off the pick-up on the 3.9 dist. you will notice 6 slots in the dist, these slots are about 3/4 inch long. it seriously idles great with that dist. the only thing is its hitting all 8 but not all on the compression stroke. i does idle fine oddly enough. the reason i used the 3.9 dist is because i was told by a few people that it didnt matter if it was a 6 or 8. keep in mind because some chevy dist. can be interchangeable between a 6 or 8. yes i was assuming this would also work. so now the parts store in my area ordered a few distributors for me to try with my electronic spark control and my electronic pick-up. i tried using a 318 vaccum advanced distributor, but i could not get any spark. my 87 has a spark control module. the 3.9 electronic pick-up has a 3 wire plug in to the harness and the 318 dist has a 2 wire plug. we tried to bypass the computer and wired the coil and dist and still no spark with the 318 vaccum advance. now my main question. can i use the 3.9 electronic pick-up and put in on a 318 electronic distributor and still run the 3.9 spark control module (computer)? because i dont see why not. now the magnet in the pick-up would be passing 8 slots instead of 6. can this work? if so what year 318 electronic dist would i need? 88-90 318?
|
| | P 1 Next Page>> |
