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by NVRDONE
Thu Jul 10, 2014 2:54 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

The latest is I have a dead motor. Did a leak down test. Had no air flow out the exhaust or intake but lots of air thru the crank case breather. Got a bore scope and looked inside the cylinders. #1 has deep scratches in the cylinder wall. Cat on right back rattles like marbles in a tin can.Local sho...
by NVRDONE
Fri Jun 27, 2014 5:02 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

Ok got a leak down tester and a bore scope. Now how do I find tdc? There are some white marks on the balancer and what looks like a pointer to the right / passenger side of the engine. My reading says the timing marks are on the timing chain and the cover has to be removed. any thoughts would be app...
by NVRDONE
Fri Jun 27, 2014 1:25 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

Hope to get a bore scope this weekend and have a look inside
by NVRDONE
Sun Jun 15, 2014 4:10 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

Ok, so today I did a compression & leak down test #1 has zero compression. Added oil & no change. All other cylinders have 160 psi with zero leak down. So is this a sleeve motor or am I looking at a complete rebuild? I will get a bore a scope and check before I decide what to do. Maybe I should just...
by NVRDONE
Thu Jun 12, 2014 5:36 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

So I checked the #1 plug and it was fouled again. Checked all the other plugs and the plugs on the right bank had some fouling, the left bank just looked worn. Original plugs were replaced at 90 k and now at 134k. I replaced all the plugs, cleared the codes and went for a drive. Under load the cel f...
by NVRDONE
Tue Jun 10, 2014 5:30 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Miss fire
Replies: 16
Views: 8478

Miss fire

My 2006 path le threw a p0301 misfire cylinder 1. It happened when towing my boat up a hill that I go up all the time Pulled #1 coil & plug. Found the plug fouled, so replaced the plug & coil. Checked the other plugs & they all looked good. Cleared code & took a drive. CEL came back on & car still d...
by NVRDONE
Sun Apr 06, 2014 9:10 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Pulling a boat up the launch ramp
Replies: 8
Views: 4556

I pull a 19' cuddy that weighs 4200# on the trailer and I have no problems pulling up a ramp. I've got Yokohama geolanders that still have about half the tread. I don't leave anyone in the boat when pulling out. 4wd does help on a slimy ramp
by NVRDONE
Wed Jan 29, 2014 8:03 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Exhaust and catalytic conv.
Replies: 8
Views: 4684

From my experience there are four cats. Two primary at the exhaust manifolds and two secondary be hind the primary ones. To replace the primary ones generally plan on some broken bolts and studs The heat shield bolts on the primary cats are the biggest problem. But you don't need the shields. Use lo...
by NVRDONE
Mon Jan 27, 2014 8:08 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Exhaust and catalytic conv.
Replies: 8
Views: 4684

Front or rear cats ? The front cats are monitored by the ECM. The rears are not monitored. I've heard of replacement pipes or some owners just gut the second cats and put them back in
by NVRDONE
Tue Dec 17, 2013 9:27 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: No heat at idle (long post)
Replies: 22
Views: 17020

There is a purge valve on the right side of the fire wall
It really helps to have the rear heat on and the front end elevated when you burp these cooling. Systems
by NVRDONE
Tue Dec 17, 2013 9:24 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: SERVICE ENGINE SOON
Replies: 7
Views: 5179

The computer does have a memory and saves check engine / maintance
Codes.
Did you just put gas in before the light came on?
by NVRDONE
Wed Dec 04, 2013 9:51 pm
Forum: General Automotive
Topic: My season of discontent: The worst 10K Miles Ever
Replies: 10
Views: 9988

Man, I understand the problem. My cats went out at 88k & nissan wouldn't do anything to help. Factory rep said I was out of warranty -too bad. And I worked for the dealer !!! Anyway I spent $2500 to replace all 4 cats. Now at 128 k the secondary cats have failed again and I burn a qt of oil per tank...
by NVRDONE
Sun Oct 27, 2013 6:50 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Broke the drive (propeller) shaft and need opinions.
Replies: 11
Views: 5871

I would try and find a used one or find oun if LKQ used parts is in your area
by NVRDONE
Thu Aug 29, 2013 8:02 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: B pipe
Replies: 12
Views: 7999

B pipe

I'm about ready to replace the secondary cats with a b pipe.
Anyone that's done this noticed an increase in power or gas mileage or just an increase in noise .
by NVRDONE
Wed Aug 21, 2013 8:43 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Catalytic Converter Issue
Replies: 29
Views: 21398

Het tech - you seem to know a lot about the pathfinders. My cats failed and now I burn about 1qt every 800 to 1000 miles. When the substrate gets sucked back into the cylinders does it score the cylinder walls ? Is there something I can do short of a complete rebuild ?

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