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DrewzR/T
Dodge Dakota
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2/12/2003
10:20:31
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 Subject: No cylinder pressure!!
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Hey guys I need some opinions on what is up with my truck! Got a 2001 R/T and last week the thing died and computer code p0202 came up! When I would try to start it it would idle super rough like it was cammed and would blow smoke out the tail pipes! I took it to the dealer and they said that there wasnt any pressure in the # 2 cylinder! What does this mean???? Cuz he was givin me the run around and didnt exactly tell me what was wrong with it!! Any help guys?????? Is it the head?? block itself or maybe piston???
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Deep Purple
Gen III
 
2/12/2003
10:36:58
| RE: No cylinder pressure!!
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More information is needed. Were you just driving along, just come off the freeway after a 100mph run, at the end of a drag or what? It's real important to know to make a suggestion. So far could be just a head gasket, valve stuck, or worse dropped a piston. Is there any water where it shouldn't be? Did the shop give you any more of an idea of what could be wrong? Come back and let us know a few more things so we might be able to help. Good luck.
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Texas Todd
Dodge Dakota
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2/12/2003
11:16:32
| RE: No cylinder pressure!!
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Drew,
If they did a comp. test, and that cylinder was too low, then all they could really say is that it lost it's compression somehow, maybe on of the ways you listed.
Without any further diagnostics, I don't think he was giving you the run around, could be many things, he might not know yet, and therefore, couldn't tell you 'exactly what was wrong with it'. Hope it's not too serious.
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Todd W
GenIII
2/12/2003
12:34:26
|  RE: No cylinder pressure!!
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Message:
Did he say 'No Compression' or 'Low Compression'? Either way it could be many things. A valve could be stuck open, the head or block could be cracked, you could have blown a hole in the bottom of a piston (In which case you'd have -no- compression, burn a -lot- of oil, and probally notice gas in the oil as well. But this can be caused by other things to).
Like someone said, more info is needed. It's not likely that it ran fine when you parked it, then didn't the next time you started it. What happened?
I agree, without disassembling the engine they are probally not going to have more than a 'Well, it might be this' idea of what is wrong. In this case, with what appears to be a serious issue, they aren't going to want to tell you it's one thing and then find out it's something else. Let them take it apart and find out whats wrong, it's still under warrenty isn't it? I'd recommend trying to get a loaner, this may take a while.
I learned to drive from James Bond and playing Grand Theft Auto
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DrewzR/T
Dodge Dakota
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2/12/2003
12:54:55
| RE: No cylinder pressure!!
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Message:
Alright well I was just cruising on the highway and it started shaking really bad then just cut out! I do get on it every so often but i wasnt at the time cuz I was broke and only had a half tank of gas! lol After that it would start up but would idle really bad and more times than none it would stall! He said that there was NO compression at all!! I have to call him today at 2 and find out more! Yeah it is under warranty thank god! I bought it from a chevy dealership in NC so They are workin on the loaner thing! Hope that helps a bit more!
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Demon-Xanth
Dodge Dakota
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2/12/2003
13:03:14
| RE: No cylinder pressure!!
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Low compression=most likely a ring.
No compression=most likely a valve.
No compression and a clatter=most likely a rod.
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DrewzR/T
Dodge Dakota
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2/12/2003
13:13:18
| RE: No cylinder pressure!!
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Also I'm not sure if this has anything to do with it but for the past month or so when i would get on it hard and the rpm were up in the 4000 range I would here like a tickin sound. Im not sure what it was and I didnt know what pingin sounded like so I thought it was that!! Thanks guys
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Todd W
GenIII
2/12/2003
14:17:06
|  RE: No cylinder pressure!!
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A ticking sound when you got on it hard? Hm... that could be a lot of things as well...
Keep us informed, eh?
Oh cripes I'm showing my Michigan roots... DIE, Eh, Diiiiiie!
I learned to drive from James Bond and playing Grand Theft Auto
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Demon-Xanth
Dodge Dakota
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2/12/2003
17:15:47
| RE: No cylinder pressure!!
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Message:
Sounds like a ring.
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Todd W
GenIII
2/12/2003
17:40:05
|  RE: No cylinder pressure!!
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Message:
I suppose it could be a ring, but aren't these engines equiped with three rings? Top, bottom, and an oil ring? It would take total failure of all three to produce excessive blowby, and even then he'd still have some compression I would think... maybe not much, but...
Either way we should find out soon after he posts what he heard from the mechanic :)
I learned to drive from James Bond and playing Grand Theft Auto
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DrewzR/T
Dodge Dakota
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2/12/2003
23:13:47
| RE: No cylinder pressure!!
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Well so far he said he found a bent rod and a bent valve spring!!!!
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HSKR
Dodge Dakota
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2/13/2003
04:05:05
| RE: No cylinder pressure!!
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Do you ever rev it up to where you bounce off the rev limiter?? IS it stock, or do you have mods on it?
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DrewzR/T
Dodge Dakota
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2/13/2003
07:46:12
| RE: No cylinder pressure!!
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Message:
Well I have hit the limiter before. It that was only one time though! Scared the bajeezuz outta me!!I have the usual mods done to R/T's!plugs ,k&n, iac relocate(moved it back when the dealership came to get it)180 stat, exhaust, headers. Thats pretty much it! Thanks for all your opinions though! I should find out the rest today!
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Todd W
GenIII
2/13/2003
10:39:32
|  RE: No cylinder pressure!!
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Bent Rod?
Huh, wonder if the bent valve and rod are on the same cylinder... could have been some foreign object in the combustion chamber. Valve is probally stuck open...
Keep us informed :) Hopefully they'll get it fixed quick.
I learned to drive from James Bond and playing Grand Theft Auto
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DrewzR/T
Dodge Dakota
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2/13/2003
10:59:39
| RE: No cylinder pressure!!
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Yeah they are on the same cylider Todd!! I guess the reason for the no pressure in Cylinder #2! I have to call today to find out the rest of the info! I hope this post is some help to some people in the future! Thanks again for all opinions and I'll keep ya informed on the final verdict!!
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Demon-Xanth
Dodge Dakota
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2/13/2003
11:37:02
| RE: No cylinder pressure!!
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Hopefully he ment pushrod and not connecting rod. One will be reletively cheap (your head's already coming off) and the other not so cheap.
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DrewzR/T
Dodge Dakota
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2/13/2003
13:29:41
| RE: No cylinder pressure!!
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Its all under warranty Demon!! Yes I believe he said pushrod!!
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Todd W
GenIII
2/13/2003
19:54:40
| RE: No cylinder pressure!!
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Pushrod bent and Valve spring toasted?
GAH! You had something colliding in there! Either your valve was hitting the top of the piston or you had some debrie in the cylinder. Have them check that cylinder -real- well! In fact, I'd have them check the other pushrods and valves as well... make sure that they did check the valve head and top of the piston itself as well!
I learned to drive from James Bond and playing Grand Theft Auto
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.alex.
Dodge Dakota
JOIN HERE
2/13/2003
20:38:44
| RE: No cylinder pressure!!
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Ticking sound was the bent valve. You kept on driving and eventually the valve stem bound in place in the valve guide. Then the pushrod couldn't get it to move (at about 2500 rpm) and it bent..... then it was just rattling around in there. Wouldn't be surprised to see the mechanic have to pull the heads and get new valve guides etc installed.
While he's in there, go ahead and buy roller-tipped rockers and thicker pushrods from Crower or Crane, etc..... once you do get the mods in place, then you will be able to rev it up worry free.
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DrewzR/T
Dodge Dakota
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2/13/2003
21:32:44
| RE: No cylinder pressure!!
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Message:
yeah I had him check todd! He told me he made sure everything was clean and free of debris! Well he said he is gonna have it back together and ready to be picked up tomorrow morning!
Alex it was done at the dealership cuz it was under warranty still and I doubt they would put those in it! Or would they??? If not Im gonna have to do it down the road when it gets stroked!
Also is there gonna be a break in period for this.... Im not really sure! Im still tryin to learn!!
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Texas Todd
Dodge Dakota
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2/14/2003
08:33:37
| RE: No cylinder pressure!!
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SOHC=less moving parts, also, a real oiling system, not splash me if you can!
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DrewzR/T
Dodge Dakota
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2/14/2003
16:09:05
| RE: No cylinder pressure!!
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Message:
Well I got it back!!! The list of parts include the intake gasket! I guess that went bad also from what he was tellin me! Over 1000 dollars total it would have costed me! Im happy again! But if it messes up again Im sellin it!!
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Todd W
GenIII
2/14/2003
16:32:55
| RE: No cylinder pressure!!
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Message:
I sure hope they replaced the intake gasket, since they had to pull the intake off to get the heads off... :)
Man, that sucks. Hopefully they got it all straightened out now :)
I learned to drive from James Bond and playing Grand Theft Auto
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