m0nkeyprince Posted April 28, 2012 Share Posted April 28, 2012 (edited) I was on the freeway when i felt the engine hesitate a little bit , at first i thought it was the road, then it happened, again and again, then when i pulled to the exit, the rpms just kept on pulsating like bouncing from 500rpm to 750 rpm, a "room roooom rom rom room room" sound. It made it one of the scariest drives home ever because the power kept going on and off and on and off. Seems like it happens more on the low gears though, i dunno. I just replaced my evap canister and added a new battery, and just had my smog check done, everything was okay. Any suggestions? PS during the smog check the mechanic said something was wrong with my timing, said it wasnt 15 degrees TDC but when he went on the computer to prove it, the computer said 15 degrees TDC and he said nvm. edit: I now think its the distributor bearing thats failing, it was coined the "red death" when i did some research on google. anyways, i took a look under the cap and rotor and heres what i saw Edited May 8, 2012 by m0nkeyprince Link to comment Share on other sites More sharing options...
Kyle94 Posted April 28, 2012 Share Posted April 28, 2012 Buy/rent/borrow a timing light? :-) its really not hard to check yourself. But i dont think it would cause pulsating rpms... Others will chime in I'm sure! Link to comment Share on other sites More sharing options...
nismothunder Posted April 28, 2012 Share Posted April 28, 2012 Vacuum leak? Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 5, 2012 Author Share Posted May 5, 2012 okay, so i looked at my distributor, underneath, there is a fine coat of brownish red dust (sort of looks like brake dust) in the cap and on the rotor, i though, well, i will just replace my cap and rotor, but it looks like i have to replace the entire distributor assembly as the bushing is going bad, so called, the "red death". Any body else heard of it? Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 6, 2012 Author Share Posted May 6, 2012 updated thread with pics! Link to comment Share on other sites More sharing options...
pathlesstaken Posted May 6, 2012 Share Posted May 6, 2012 Does the fluctuation in the RPM's start when you're around oh, say 2200-2400 rpm? Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 6, 2012 Author Share Posted May 6, 2012 nope, it starts from idle i think it actually recedes a little after a i go higher speed Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 8, 2012 Author Share Posted May 8, 2012 updated! Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 14, 2012 Author Share Posted May 14, 2012 so before i buy a new distributor, i would like to know if that brown dust is normal, any of you guys, or gals, willing to check for me? Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 14, 2012 Author Share Posted May 14, 2012 also, which section is the distributor found in in our FSMs? it should be in electrical right? Link to comment Share on other sites More sharing options...
m0nkeyprince Posted May 19, 2012 Author Share Posted May 19, 2012 FIXED!!! The problem turned out to be the distributor, I think the bearing was burnt out, as when I turned the old distributor upside down, brown dust came down link to distributor thread here (where I will also link the How to guide): http://www.nissanpathfinders.net/forum/index.php?/topic/33193-new-distributor-help-installing-please/page__pid__624261#entry624261 Link to comment Share on other sites More sharing options...
Kyle94 Posted August 30, 2013 Share Posted August 30, 2013 Bringing back an older thread... My new truck has this pulsation during acceleration. Unless I floor it. Then it just takes off. But if I'm just taking it easy... It sort of pulsates every so smoothly. I swear you can also almost see the tech move too. Link to comment Share on other sites More sharing options...
system_f Posted September 5, 2013 Share Posted September 5, 2013 (edited) That bearing can easily be replaced with a better one for very little money. I have replaced them on several Xterras and R50s. It turned out a bearing in the front wheel of one of my bicycles fit and I just use those. Do not put the Tone ring on upside down, this will cause all kinds of problems. http://overlandtrucks.com/system-f/dizy_rebuild/ Edited September 5, 2013 by system_f Link to comment Share on other sites More sharing options...
system_f Posted September 5, 2013 Share Posted September 5, 2013 http://www.nissan4wheelers.com/topic/vg33e-distributor-fix 1 Link to comment Share on other sites More sharing options...
Kyle94 Posted September 17, 2013 Share Posted September 17, 2013 Yikes! : Link to comment Share on other sites More sharing options...
adamzan Posted September 18, 2013 Share Posted September 18, 2013 Buy a new distributor. 1 Link to comment Share on other sites More sharing options...
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