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[Datsun 1200 encyclopedia]

Engine Trouble Diagnosis

(Difference between revisions)

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Revision as of 17:31, 11 December 2006
Datto1000wagon (Talk | contribs)

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Revision as of 17:46, 11 December 2006
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(k)broken or short-cicuited low tension lead to distributer points. -test and renew lead. (k)broken or short-cicuited low tension lead to distributer points. -test and renew lead.
 +
 +
 +2. engine will not start-weakor erratic cranking.
 +
 +(a)weak or faulty battery. -recharge or renew battery.
 +
 +(b)fault in starter lead or solenoid. -test and renew faulty components.
 +
 +(c)faulty starter. -test and overhaul starter.

Revision as of 17:46, 11 December 2006

1. engine will not start by normal cranking:

possible cause -remedy

(a)dirty or corroded distributor points. -clean or renew and adjust points

(b)carburettor flooding -check needle valve and float, clean out fuel system

(c)moisture on high tension wire and/or inside distributer cap. -dry out high tension wires and cap

(d)dirt or water in carburettor or fuel system. -clean out carburettor and fuel system

(e)incorrectly set spark plug gaps. -reset spark plug gaps to specification

Verify spark is strong enough to jump in the cylinder. Rare failures will produce a spark when the plug is grounded outside the engine, but won't jump under higher cylinder pressures.

(f)faulty coil or capicitor. -test and renew faulty components.

(g)faulty high or low tension wires. -test and renew faulty wires.

(h)fuel vapor lock. -check source of vapor lock and insulate against heat.

(i)faulty fuel pump. -test and overhaul fuel pump.

(j)incorrectly set ignition timing. -check and retime ignition.

(k)broken or short-cicuited low tension lead to distributer points. -test and renew lead.


2. engine will not start-weakor erratic cranking.

(a)weak or faulty battery. -recharge or renew battery.

(b)fault in starter lead or solenoid. -test and renew faulty components.

(c)faulty starter. -test and overhaul starter.