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Post by chippie on Mar 4, 2023 15:56:30 GMT 1
So since fitting a new filter and SCV, you also changed the glo plugs…,
Were they oem spec / Toyota supply or trade outlet?…
My money is on glow plugs,….,Check the voltage and current draw on start up…,
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jazz
New Member
Posts: 54 
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Post by jazz on Mar 4, 2023 18:39:47 GMT 1
Denso glow plugs fitted which I believe are oem spec. Glow plugs are on a bus bar, 13 volt reading with ignition on and at a guess this voltage is applied for around 30 seconds. Glow plug resistance is 1.5 ohm on each glow plug.
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Post by valhalla on Mar 4, 2023 23:06:44 GMT 1
As chippie says, you need to monitor the current draw on each glowplug during the glowing-phase (i.e. when they are first turned-on). You are looking for around 20Amps apiece, and you need to confirm that all four are working, by using a current-clamp around the supply to each glowplug. This might mean making a pseudo buzz-bar using heavy-gauge wire to each plug from the main supply wire into the usual buzz-bar, such that you can get a current-clamp around each wire to monitor what is going-on.
Modern glowplugs cannot be assessed by resistance alone, as many are run as "smart plugs" by a dedicated controller. This gives them a longer life, and makes them more useful during post-start emissions-limiting cold-running.
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