Newbie needs some help - Nissan Frontier Forum
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#1 (permalink) Old 12-07-2012, 02:47 AM
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Newbie needs some help

Hi all... I have a 2000 Nissan Frontier 3.3 2wd CC. I just got it maybe a little over a month now. I just dont know how to fix it or where to start. First it is spurting out unburned gas from the gasket between the exhaust manifold and, i assume, the pre-cat connection. It has codes P1105 (Manifold Absolute Pressure solenoid valve or circuit fault) and P0300 (Random/Multiple Cylinder Misfire) Ive checked all o-rings on the fuel injectors, checked the MAP sensor connection and hoses, connection has correct voltage. I dont know where to start... Ive been told it could be the distributor, faulty injectors, blown head gasket.. The distributor is priced right around $400 and each injector is about $70... head gasket is about $400... i just dont wanna spend that much money and it not fix the problem... thanks for all the help in advance
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#2 (permalink) Old 12-07-2012, 12:10 PM
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first i would clean the maf sensor with approved maf cleaner. its the sensor right downwind from you air cleaner. remove it from the housing with the screws then clean it. put it all back together. get two cans of starting fluid. with ur egnine running. spray the starting fluid all around your intake manifold, and around every vacuum line. short squirts, dont douse it. if your engine stars skipping, you just found your vacuum leak. a vacuum leak will cause all kinds of erroneous crap to happen, its unaccounted air in the system. so how it goes then post back.
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#3 (permalink) Old 12-07-2012, 12:49 PM
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I'd start by getting a manual if you don't have one. There is a maze of hoses tubes and other crap back there that is not ment to be in with out a map. Start by fixing the gas leak then go from there, could be all stemming from that.

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#4 (permalink) Old 12-07-2012, 09:01 PM
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ummm,what gas leak are you talkin about chainsaw.OP didnt mention a gas leak. she said unburnt fuel is coming out of the manifold donut but that will never be liquid tight no matter what you do (other than a welder)
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#5 (permalink) Old 12-07-2012, 09:09 PM
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If unburnt fuel is coming out the manifold, and you are getting coeds for a misfire, then maybe you have a cylinder that is not firing? maybe something causing a bad spark?

VAC leaks do cause a ton of problems..

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#6 (permalink) Old 12-08-2012, 03:00 PM
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Quote:
Originally Posted by Wanganator View Post
ummm,what gas leak are you talkin about chainsaw.OP didnt mention a gas leak. she said unburnt fuel is coming out of the manifold donut but that will never be liquid tight no matter what you do (other than a welder)
You know what I mean.

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Last edited by chainsaw; 12-08-2012 at 03:13 PM.
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#7 (permalink) Old 12-08-2012, 03:37 PM
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ok..

thanks for the advice.. ive put in new plugs and wires, rotor n cap look fine... what else would cause the misfiring?? im thinking that may be the cause of the unburned fuel... im planning on trying the vacuum lines in a couple days and i do have a manual....
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#8 (permalink) Old 12-08-2012, 03:47 PM
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What did the plugs look like when you pulled them out?

Run it 'till it breaks and fix it faster!
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#9 (permalink) Old 12-08-2012, 06:41 PM
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i dont know how to explain what my plugs looked like and i tried uploading a pic of the old plugs but it wont upload for some reason...
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#10 (permalink) Old 12-08-2012, 07:17 PM
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Use photobucket or imageshack to host the pictures and just copy/paste the link code in your post.

How many miles/km on the truck? Has the timing belt been replaced?
A blown head gasket would give you some white smoke out of the exhaust due to coolant entering a combustion chamber. Check your coolant and oil as well to see if there is any contamination

2000 Silver Frontier, SE 4x4 V6 Crew Cab (5spd) - 309xxx km and counting!
2014 Cayenne Red Xterra Pro4X (6spd) - 800km!
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