Question about Datsun 720

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Number 4 cylinder will not fire on my datsun 620 with a l20b engine

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If you havent fixed it yet then .
Then either your distributor cap is cracked/points set to 012" /lead no good/plug no good/tappet totight set tappets to 012" [No 4] cylinder/burnt out exhaust valve/ worn or broken piston rings [No 4 ]or a leaking inlet manifold gasket.,,or sometimes burnt or blown head gasket

Posted on Oct 05, 2014

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Posted on Jan 02, 2017

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motor1258
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SOURCE: DATSUN 720 L20 ENGINE TIMMING

http://www.autozone.com/addVehicleId,1260701/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528004f288

Posted on Dec 27, 2008

rogrrabbit
  • 986 Answers

SOURCE: 1980 Datsun 720 NEED TO KNOW HOW TO SET THE

http://forums.nicoclub.com/zerothread?id=428078

Here is a link to a Datsan Fourm hope this helps

Posted on Sep 11, 2009

  • 1244 Answers

SOURCE: engine has a loud tick and get a message the

worn camshaft lobe and or rocker assmbly jumped off

Posted on Jan 14, 2010

agent91
  • 2100 Answers

SOURCE: What does miss fire on #4 cylinder mean. My engine

Should be the plug wire, I had the same problem here, I took a wire from another car just to check it and sure enough, it was the plug wires, Just replace the whole set and keep a couple for spares. Hope this helps.

Posted on Oct 11, 2010

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1 Answer

Firing order on a 97 Toyota Tacoma 2.7 liter 4 cylinder


The firing order of in-line 4 cylinder engines is the same (for old car models) of Chevy, Olds, Pontiac, Dodge/Plymouth, Datsun/Nissan, Honda, International, Isuzu/LUV, Jeep, Mazda/Courier, Mitsubishi, Opel, Toyota and VW.
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Source: "Tune-up and Electrical Service" page 161 ISBN 1-879110-15-6 published by Do-It-Right Publishing, Inc P.O. Box 839 Newhall, CA 91322-0839

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I'm getting a Datsun 510 1970 and I was wondering what's the mpg on a l20b?


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Carburetor


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Diagram for distributor cab and wires for datsun 510 1978 wagon


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Standing in front of car looking at engine, number one cylinder tower is in the 4 o'clock position, number 3 cylinder tower is at the two o'clock position, number 4 cylinder is at 10 o'clock, and number two cylinder tower is at the 8 o'clock position.

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1 Answer

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Dec 23, 2009 | Datsun 720 Cars & Trucks

1 Answer

Im chasing new bolts to reconnect my manifold to the block/engine. Any assistance greatly appreciated.


if it is a l20b engine it is about a m7 or m8 or m10 with a 12mm head about 28mm long or longer with a lock washer and the big washer that holds the exhaust and intake be careful the head is aluminum so it wont handle a heavy torquing

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1 Answer

DATSUN 720 L20 ENGINE TIMMING


http://www.autozone.com/addVehicleId,1260701/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528004f288

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1 Answer

Change head gasket 1974 Datsun 620 pickup


As far as compresion goes it is more important that all cylanders are close to each other than what the actual psi is they should be within about 5 psi of each other. When changing the head gasket on the 620 you need to make sure that you wedge the timing chain so that the chain tensioner does not pop out. If it does you need to remove the water pump and front engine cover to replace it. A 6 inch long piece of wood tapered from about 1 inch to about 1 3/4 inch should work. Other than that it's a very easy and straightforward job. I would recomend that you take the head to a machine shop and have it checked for warp, if the engine has been severly overheated it can cause the aluminum head to warp. I know this from personal experience. If there is some warpage just have the machine shop machine it back to flat so that the new head gasket dosen't leak. If you are getting oil comming OUT of the dipstick tube replace the PCV (positive crankcase ventilation) valveThe 620 is a great little truck and the L16 L18 and L20 engines were all very easy to work on and well designed. The downfall of almost all Datsuns was body rust.

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