Astron II Common Problems - Revision history

Cartman02au at 02:43, 4 January 2026

2026-01-04T02:43:03Z

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	[[Category:First Generation Workshop]]		[[Category:First Generation Workshop]]
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			[[Category:Technical Articles]]

Cartman02au at 08:57, 17 November 2013

2013-11-17T08:57:32Z

← Older revision		Revision as of 08:57, 17 November 2013
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	==Water pump==		==Water pump==
	The water pump on the Astron II seems to last a good while but when it starts dripping coolant from the little hole in the bottom of it, it is time to start looking at replacing it.		The water pump on the Astron II seems to last a good while but when it starts dripping coolant from the little hole in the bottom of it, it is time to start looking at replacing it.
	[[Category:~~2.6L_Technical~~]]		[[Category:Astron Engines]]
	[[Category:First Generation Magna]]		[[Category:First Generation Magna]]
	[[Category:Second Generation Magna/Verada]]		[[Category:Second Generation Magna/Verada]]
	[[Category:First Generation Workshop]]		[[Category:First Generation Workshop]]
	[[Category:Second Generation Workshop]]		[[Category:Second Generation Workshop]]

Cartman02au at 01:17, 11 January 2010

2010-01-11T01:17:52Z

← Older revision		Revision as of 01:17, 11 January 2010
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	The water pump on the Astron II seems to last a good while but when it starts dripping coolant from the little hole in the bottom of it, it is time to start looking at replacing it.		The water pump on the Astron II seems to last a good while but when it starts dripping coolant from the little hole in the bottom of it, it is time to start looking at replacing it.
	[[Category:2.6L_Technical]]		[[Category:2.6L_Technical]]
	[[Category:~~First_Generation~~]]		[[Category:First Generation Magna]]
	[[Category:~~Second_Generation~~]]		[[Category:Second Generation Magna/Verada]]
	[[Category: First Generation Workshop]]		[[Category:First Generation Workshop]]
			[[Category:Second Generation Workshop]]

Administrator: Protected "Astron II Common Problems" [edit=sysop:move=sysop]

2008-01-18T11:19:52Z

Protected "Astron II Common Problems" [edit=sysop:move=sysop]

New page

Many of the people reading this site have probably heard the horror stories about the Mitsubishi [[Astron II]] engine. Are these justified? no. The Astron II is quite a reliable engine if maintained properly. The most common problems that seems to face them are:
==Oil leaks==
If you see a clean Astron II it is like winning the lottery. More often than not Astrons leak oil. The most common places are:
*At the back of the engine under the air conditioning pump where the [[Media:Astron_sump_leak.jpg|timing case, sump and block mat to each other]]
*From around the oil filler cap. I have no idea what causes this, but it is often easily fixed by doing the oil filler cap up fully then turning back around 1/4 of a turn
*From the water pump side cam seal
*From the rocker cover - this is usually caused by not using RTV sealant where the "half moons" sit on the head and where the rocker gasket meets these.

==Rattles==
A loud metallic rattle that occurs when the engine first starts up and sometimes at idle on 1985-1990 model engines normally indicate that the balance shaft chain requires [[balance_shaft_chain_adjustment|adjustment]].

If the same noise is heard on later model Astron IIs, the timing chain, balance shaft chain and guides probably need replacement as they use a [[self_adjusting_bs_chain|self-adjusting chain]] on the balance shaft.
==Smoke==
If you start the engine and it blows a little blue smoke and then clears itself, it generally means that the valve stem seals need replacing. This is quite common on these engines and isn't too bad to [[valve_stem_seal_replacement|repair]].

If the engine smokes all the time there is usually one of two causes:
*The oil needs changing - this is easily checked by pulling the dipstick out. If the oil runs off the stick like water - you are due for an oil change.
*The engine needs reconditioning.
==Water pump==
The water pump on the Astron II seems to last a good while but when it starts dripping coolant from the little hole in the bottom of it, it is time to start looking at replacing it.
[[Category:2.6L_Technical]]
[[Category:First_Generation]]
[[Category:Second_Generation]]
[[Category: First Generation Workshop]]