Datsun Mini Truckin Homepage
Forum Home Forum Home > Datsun Trucks > 720's
  New Posts New Posts RSS Feed - 1984 720 King Cab - Red Thunder
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

1984 720 King Cab - Red Thunder

 Post Reply Post Reply Page  <1234>
Author
Message
EzCruiser View Drop Down
Admin Group
Admin Group
Avatar

Joined: 12 Jan 2010
Location: NE-TN
Status: Offline
Points: 3201
Post Options Post Options   Thanks (0) Thanks(0)   Quote EzCruiser Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2014 at 4:44pm
Water in the gas? I'd check the carb bowl. Not sure about prices there but our local muffler shop put a complete exhaust, I supplied resonator, on my truck for $90.. you can save a lot of money by purchasing the resonator or muffler from the internet. The carburetor shouldn't cost you that much. A weber 32/36 will run you about 180-220 here plus the adapter which is 15-45. Shop around. Ebay is your best friend.

Also, I would check the timing and make sure your setting the time with the dizzy unhooked and plugged vacuum port.
Back to Top
foxfan1992 View Drop Down
Newbie
Newbie


Joined: 21 Jul 2013
Location: Victoria, BC
Status: Offline
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote foxfan1992 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2014 at 9:36pm
The truck runs fine cold - but when it warms up it cuts out every time it is started - no matter what is done with the idle screw.

As for Ebay - the only Weber 32/36s I've found run $290USD, and do NOT ship to Canada. I'm hoping I can find one on my trip to Seattle in four weeks' time for cheaper and bring it back myself.
Back to Top
smooth620 View Drop Down
Senior Member
Senior Member
Avatar
HAWK EYE

Joined: 20 Jan 2010
Location: By KuniaWalmart
Status: Offline
Points: 1968
Post Options Post Options   Thanks (0) Thanks(0)   Quote smooth620 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 2014 at 11:59pm
Originally posted by foxfan1992 foxfan1992 wrote:

The truck runs fine cold - but when it warms up it cuts out every time it is started - no matter what is done with the idle screw.
That symptom you described narrows it down to a vacuum leak.
Best way to test for a vac leak is when the engine is cold. Start it & Spray carb cleaner around carb base gasket, intake manifold, etc. When you hear an abrupt change in RPMs you've found your leak.
Better to learn from other peoples mistakes than to make them yourself.-Anonymous

Back to Top
EzCruiser View Drop Down
Admin Group
Admin Group
Avatar

Joined: 12 Jan 2010
Location: NE-TN
Status: Offline
Points: 3201
Post Options Post Options   Thanks (0) Thanks(0)   Quote EzCruiser Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2014 at 12:06am
http://www.ebay.com/itm/Weber-32-36-DGEV-Carb-1-Yr-Warr-/200721589877
I have found several but don't know if they ship to canada. Heck, if you find one you like just ask if they would consider shipping to Canada.
Back to Top
EzCruiser View Drop Down
Admin Group
Admin Group
Avatar

Joined: 12 Jan 2010
Location: NE-TN
Status: Offline
Points: 3201
Post Options Post Options   Thanks (0) Thanks(0)   Quote EzCruiser Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2014 at 12:08am
I also agree with smooth. Is this truck equipped with smog?
Back to Top
smooth620 View Drop Down
Senior Member
Senior Member
Avatar
HAWK EYE

Joined: 20 Jan 2010
Location: By KuniaWalmart
Status: Offline
Points: 1968
Post Options Post Options   Thanks (0) Thanks(0)   Quote smooth620 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2014 at 12:41am
Originally posted by foxfan1992 foxfan1992 wrote:

Another update... got the truck out of the garage and took it for a short drive yesterday. It's not 100%, but it does go. I'm not sure what the problem is, it idles really high when it's cold and when warmed up it idles great, but runs rough - sounding like a Ford F150 xD

I guess my truck's just trying to earn her name back after I fixed the blowing exhaust. Dad informed me it may be my valves and ignition timing - we did the valve clearances on the cold engine before we started it, but then we have to recheck them after it's had a good run and do the ignition timing, not to mention retorque the cylinder head bolts once it's had a few runs.
Went back and re-read your build thread, i must've missed the post above. On 1st start up it should run ok but not really rough.
 Be sure all timing marks are correct when crank pulley is on zero.  Retorque head and do a compression test or leakdown test to be sure all valves are closing tight. Recheck timing with a timing light. Test all spark plug wires, be sure they are all firing consistently.
You should be able to do these tests even with an off tuned carb.
Better to learn from other peoples mistakes than to make them yourself.-Anonymous

Back to Top
foxfan1992 View Drop Down
Newbie
Newbie


Joined: 21 Jul 2013
Location: Victoria, BC
Status: Offline
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote foxfan1992 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Aug 2014 at 12:43am
The truck is equipped with EGR and all the pipes involved with reducing emissions, yes. For some reason it is missing the catalytic converter as the exhaust pipe is not the original one. Weird.

Anyhow I will see what I can do with the vaccuum leak. I have a feeling it might be the carburetor just being worn out and letting too much air in.
Back to Top
foxfan1992 View Drop Down
Newbie
Newbie


Joined: 21 Jul 2013
Location: Victoria, BC
Status: Offline
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote foxfan1992 Quote  Post ReplyReply Direct Link To This Post Posted: 31 Aug 2014 at 2:07am
Looked at the carburetor and noticed a pipe that seems to be missing. Will take a photo tomorrow and post it here. I'm thinking it might be the vaccuum advance, but would the truck start and run at all if it was?
Back to Top
Braden620 View Drop Down
Moderator Group
Moderator Group
Avatar
Kentuckys Finest

Joined: 15 Jan 2010
Location: Somerset Ky.
Status: Offline
Points: 3067
Post Options Post Options   Thanks (0) Thanks(0)   Quote Braden620 Quote  Post ReplyReply Direct Link To This Post Posted: 31 Aug 2014 at 10:23pm
Should run fine without vacuum advance.  
If we ever forget that we are One Nation Under God, then we will be a nation gone under.
Ronald Reagan
Back to Top
foxfan1992 View Drop Down
Newbie
Newbie


Joined: 21 Jul 2013
Location: Victoria, BC
Status: Offline
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote foxfan1992 Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2014 at 2:53am
Found the missing pipe and hooked it back up, turns out one of the other pipes was tugging on it and eventually it came loose. Reconfigured it so it shouldn't come off so easily and now the truck is running smoothly.

Gonna take it for a test drive up to Nanaimo on Wednesday, and if it passes I'll be driving her down to Seattle and Bremerton in three weeks' time. On that note - does anybody here know of a good place to get an exhaust pipe replacement done? The shop here quoted $532 for a custom pipe, new muffler and tailpipe, because the catalytic converter is missing. Ideally I'd like to get a catalytic converter fitted and new exhaust pipe, tailpipe and muffler - preferably less than $500.
Back to Top
 Post Reply Post Reply Page  <1234>
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.047 seconds.