Replace the plug and the wire . Rascal
Sent from my iPhone
On Dec 7, 2009, at 10:00 PM, <ttroidl@bluefrog.com> wrote:
>
> Ok, tested Compression, cranking I got around 160/165
>
> Running I got around 90/100.
>
> I wasn't able to get vac as I dunno where my vac guage disapeared to!
>
> I disconnected #1 injector, measured around 13 ohms (engine was hot)
> and compared it to the other 2 on bank 1 and all were about the same.
>
> With it unhooked I got no popping, so it's cyl #1 for sure...
>
> Plug (new 1 week old) was very white confirming lean cond.
>
>
> Ideas???
>
> was told it could possibly be a valve guide came loose?
>
> have to have to spend $$$ to have that torn down :( I just don't
> have time to be pulling heads rite now.
>
> Thanks
> Tony.
>
>
> --- bernd@dodgetrucks.org wrote:
>
> From: "Bernd D. Ratsch" <bernd@dodgetrucks.org>
> To: <dakota-truck@dakota-truck.net>
> Subject: DML: RE: misfire/backfire 02 Dakota 3.9
> Date: Mon, 7 Dec 2009 05:18:51 -0600
>
>
> P0172: Fuel Trim System Rich Bank 1 (Driver-Side)
> P0301: Cylinder #1 Misfire (not necessarily an injector)
>
> Definitely sounds like something is wrong with #1....i'd be checking
> compression and actual engine vacuum before replacing anything
> else. Compression, running compression, and vacuum will give you
> the direction to go.
>
> - Bernd
>
> -----Original Message-----
> From: ttroidl@bluefrog.com [mailto:ttroidl@bluefrog.com]
> Sent: Sunday, December 06, 2009 11:48 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: misfire/backfire 02 Dakota 3.9
>
>
>
>
> Well, after replacing cap rotor, plugs, wires. it still pops thru
> the intake under load at low rpms, (sometimes) and for the 1st time
> the eng light came on!
>
> Got po172
> po301
>
> misfire only cyl 1, new plug & changed out wire again still no go.
>
> I did look down the TB for oil, pretty clean, very very little oil
> or anything.
>
> I'm looking at injector next????
>
> when it's popping in OD if I step on it hard it goes like a bat
> outta hell...
>
> $72 for an injector, figured I'd post my findings befor I spend $$$
> if it's not gonna help!
>
> thanks much!
>
> Tony.
>
>
>
>
>
>
This archive was generated by hypermail 2b29 : Fri Jan 01 2010 - 02:54:40 EST