Question about 2005 GMC Savana

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I'm getting Code P0300 after known bad gas was in the van (which I ran all out) and now engine ticks and runs rough. Put in 10 gallons of fresh gas with Sea Foam in it and also some in oil. Sounds almost like a lifter problem but seemed to start the same time as I put the bad gas in (2 year old gas from a jet ski - 10 gallons worth.)

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Posted on Jan 02, 2017

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SOURCE: 1994 GMC 5.7 L Hesitation Problems

the problem is most likely the EGR Valve. to test this disconnect the vacuum line to the EGR Valve and block it with a screw or golf tee, if the hesitation goes away replace the EGR Valve.

Posted on Dec 24, 2008

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SOURCE: ran out of gas now won't start

Depress shrader valve on fuel rail and see if pump primed,If primed take air snorkle from throttle body of and use carb cleaner to gett running,Some one can keep giming short burst or cleaner to thottle boby inlet till air gets out of system.Have seen this before.Air trapped in injectors.

Posted on Jun 20, 2009

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SOURCE: 2000 gmc jimmy was running rough i was told it was

none of that will fix a pluged cat the only way to fix a pluged cat is to replace it

Posted on Aug 15, 2009

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SOURCE: my truck idles rough but when im on the gas runs

That is a random misfire code that could be because of low compression in 2 cylinders. Check compression in each.

Posted on Oct 14, 2009

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SOURCE: easiest way to fix lifter tick/tap on a 1991 300zx

open the valve cover and feel all your lifters to see which is loose.

spin your push rod with your fingers while tightening your rocker arm(should be 5/8) once you can not spin the push rod any more give it 3/4 of a turn and your good to go repeat for any loose rocker arms.

Posted on Jan 29, 2010

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Starts up but runs rough, exhaust smells, and when you give it gas it wants to shut off.


How To Fix P0300 random misfire codes in your car ...

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https://www.youtube.com/watch?v=OyvdWeyDHf4
Feb 5, 2010 - Uploaded by Scotty Kilmer
Scotty Kilmer, mechanic for the last 46 years and counting, shows how to fix your car if the check engine light ...

P0300 - OBD-II Trouble Code - RepairPal

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OBD II Fault Code. OBD II P0300. Fault Code Definition. Random, Multiple MisfireDetected. Symptoms. Check Engine Light flashing; Rough running, hesitation ...

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https://www.engine-light-help.com/P0300-check-engine-light.html
The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the ...

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www.random-misfire.com/

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My car ran out of gas, now it will not start


If high miles, it may be a fuel pump. Fuel pumps usually go when gasoline is low and pump gets too warm. This may mimic running out of gas when there is a gallon or two of gas still left to draw but needle reads empty. Have someone put their ear to the gas tank while you turn on the ignition switch. the pump should run for 2-10 seconds with key on and not cranking.

If you don't hear the pump run, then investigate further for a failed pump.

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I ran out of gas last night and the van cut off. We put some gas in it but it wouldn't start. At first it was acting like it wanted to start but eventually the engine quit turning and all power to the...


Put at least a gallon in charge battery, turn key forward just enough for dash symbols to come on (do this with key few times then try to start

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I have a 1998 Dodge Caravan. I got a "tune up" approx. 2 weeks ago with new spark plugs, fuel filter & air filter. It did fine driving around town & on a 130 mile trip. I filled up with...


Sounds like you got a tank of bad gas. That would easily cause your issues. Start by draining as much as you can, put a can of Seafoam in there, add a few gallons of fresh gas, drive to the gas station and tank up, and run that tank down until your gas light comes on before adding more. You may end up needing a fuel filter or plugs again, but with minimal run time on the bad gas, you'll probably be fine.

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2003 KIA Sedona, son-in-law over heated and blew head gasket. Had heads machined, replaced gaskets and re-assembled, van ran very rough, rechecked timimg marks, ok. Getting code 305, checked and found...


timing belt set set wrong firing to early.this a classic case of timing gone wrong.even one notch out will result in a badly running engine.bring it back and get it retimed on the belt/chain.adrian

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Stall upon running out of gas but won't start up again with gas


Remove the air cleaner and pour about a quarter cup of gasoline into the carburetor or throttle body. Do not stand near the engine when cranking it -- fire/small explosion hazard.

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P0300 code (worst nightmare)


A flashing light means there is a serious misfire that increases vehicle emissions, according to the dealer book. But I remember our was corrected after I changed the plugs and wires. That is the cheapest and problem the most commen solution. Then, I might try the EGR valve and gasket, still fairly inexpensive (under $100 for aftermarket, about $110 total for dealer part), and relatively simple to replace. One of those two should do the trick.

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Rough idle P0300


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1994 Chev Astro 4.3L AWD "W" OBD Code 43 168K Miles


code 43, i would expect with running rough but that's not the cause , its a result ,if the system detects noise (knock) it will try to compensate by retarding the timing to save the motor , built in self preservation , i hope your not running on 2 year old gas , i'd be amazed its even running at all , gas varnishes up bad enough in 6 months to 1 year , i suggest getting some fuel additive in there to stabilize and clean the fuel system , or have it drained and start over with fresh gas and go from there . cheers .

Jan 10, 2009 | 1994 Chevrolet Astro

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