90 landcrusier problems

90_4runner · 07-30-2009, 12:44 PM

Hi im posting this forum for a friend of mine....well he has a 90 landcrusier and he says it haves problems when starting the truck when the engine is warm/hot...It starts when its cold but just not hot. anyone ever had this problems b4? Oh! and by the way he already change the heating sensors but still. anyhelp would be great!

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FlyingLow · 07-30-2009, 01:11 PM

Vapor lock? Is it fuel injected or carb? Is it sparking? Is it getting fuel? Could be a gremlin in the crank circuit on the ignition thats opening up when its warm.

I assume it cranks OK? If the head gasket is leaking collant into a cylinder it can make it hard to start but not impossible when its warm.

90_4runner · 07-30-2009, 01:31 PM

Quote:

Originally Posted by FlyingLow

Vapor lock? Is it fuel injected or carb? Is it sparking? Is it getting fuel? Could be a gremlin in the crank circuit on the ignition thats opening up when its warm.

I assume it cranks OK? If the head gasket is leaking collant into a cylinder it can make it hard to start but not impossible when its warm.

Well he's not familiar with the gremlin crank circuit...can u please post a pic showing where's it at? thanks!

FlyingLow · 07-30-2009, 04:37 PM

Quote:

Originally Posted by 90_4runner

Well he's not familiar with the gremlin crank circuit...can u please post a pic showing where's it at? thanks!

A gremlin is referring to a problem that comes and goes. Ignition coils and other electronics can have issues with heat that causes circuits to open up. I would not be suspecting the coil though. Depending on the distrubuter set up, some have 12 volts suppled to the ignition during cranking and then a ballast resistor drops it to about 9 volts during normal running. I don't know how that ignition setup is wired though.

You still have provided very little info about the engine.

Transmission Frank · 08-13-2009, 08:33 PM

had an ol caddy do the same thing to me turns out eng just plain old wore out had plenty o compression to start her up but when hot no sir yee bob the ol jap pile might just be shot maybee do the cash for clunkers deal

07-30-2009, 01:11 PM	#2 (permalink)
FlyingLow Registered User Join Date: Jul 2007 Location: Van Island BC Posts: 93	Vapor lock? Is it fuel injected or carb? Is it sparking? Is it getting fuel? Could be a gremlin in the crank circuit on the ignition thats opening up when its warm. I assume it cranks OK? If the head gasket is leaking collant into a cylinder it can make it hard to start but not impossible when its warm. __________________ 77 FJ40 36 TSLs, 45 springs in rear, 8274, ARB rear, TBI 2F 97 4 Runner Ltd TLCA# 9203

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08-13-2009, 08:33 PM	#5 (permalink)
Transmission Frank Banned Join Date: May 2009 Posts: 28	had an ol caddy do the same thing to me turns out eng just plain old wore out had plenty o compression to start her up but when hot no sir yee bob the ol jap pile might just be shot maybee do the cash for clunkers deal