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Scion xB Engine Problems

60 messages,  Last post on Nov 11, 2009 at 9:51 PM

You are in the Scion xB Maintenance & Repair Forum. Your Host is kcram

What is this discussion about? Scion xB, Engine, Wagon


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#7 of 60
Re: Hydrolock [aatherton] by yoda8391
Jul 06, 2006 (8:37 pm)
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Replying to: aatherton (Jul 05, 2006 3:26 pm)

Yes I only Blew One cylinder. The engine kept running until it ran out off oil and i can to a stop on the side of the interstate. My mechenic said that when he released the one bad cylinder the engine still ran. I mean it would turn over but wouldn't stay started. It did not seixe the whole engine up.
#8 of 60
Water + Custom Intake = Engine Damage by moparbad
Jul 08, 2006 (10:33 am)
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Your auto insurance may cover the damage. Scion (Toyota) is not responsible to warranty the damage to your engine caused by modifications to air intake you made.
 
Hydrolock due to stock or aftermarket intake is not limited to Scion, this is a known problem with many makes of vehicles when aftermarket intakes are added, and some stock vehicles with a low intake are known for this issue when drivers do not use reasonable caution and drive thru water.
#9 of 60
blown xb motor.."s"??? by 04scizzy
Jul 08, 2006 (10:07 pm)
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i think that there is something wronge with the head gasket on some xb's i just blew my motor this weekend and it was caused by a bent(twisted) piston rod bashing a hole in the side wall of my block. they took the oil pan down and said that it was because i was over reving it!!!! WTF?? this is a commuter car, i bought it as a commuter car, and i was commuting when it happened!! i had driven 30 miles at like 80MPH and then poof. Well if any of you have read about this in other forums that i cant seem to find let me know i need all the evidance i can gather for court. thanks agian!!!!!!!!!
#10 of 60
Re: blown xb motor.."s"??? [04scizzy] by Mr_Shiftright HOST
Jul 09, 2006 (6:02 pm)
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Replying to: 04scizzy (Jul 08, 2006 10:07 pm)

how many miles?
 
How are your service records?
#11 of 60
Re: blown xb motor.."s"??? [Mr_Shiftright] by 04scizzy
Jul 09, 2006 (10:03 pm)
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Replying to: Mr_Shiftright (Jul 09, 2006 6:02 pm)

theres 40,000 miles on my car and services is better then regular. i use synthetic and still change ever 3000.
#12 of 60
Re: blown xb motor.."s"??? [04scizzy] by aatherton
Jul 13, 2006 (9:29 am)
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Replying to: 04scizzy (Jul 08, 2006 10:07 pm)

80 mph is 4000 rpm for a manual and is not over-revving. People drive at that speed for days on end. That is not the cause of a damaged connecting rod. Do you have a cold air intake and ever drive in a little water or a puddle?
#13 of 60
Re: blown xb motor.."s"??? [aatherton] by yoda8391
Jul 13, 2006 (6:58 pm)
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Replying to: aatherton (Jul 13, 2006 9:29 am)

I have a cold air intake and also drove through a puddle. My mechenics said that it was not water that blew my engine. Toyota said that my engine hydrolocked. That means the engine seized up. My Mechenics said that it did not hydrolock because the could move the damaged rod and turn over the egine and it would run. My mechenic said to take it to toyota and stick it to them.
#14 of 60
Re: blown xb motor.."s"??? [yoda8391] by aatherton
Jul 14, 2006 (5:27 am)
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Replying to: yoda8391 (Jul 13, 2006 6:58 pm)

Hydrolocking and seizing are very different. Their only similarity is that they can both stop an engine if severe enough.
 
Hydrolocking means that water gets into a cylinder (through the open cold air intake). The OEM air intake and filter are designed to prevent this.
 
Water is incompressible and suddenly slows the engine, which bends or breaks the connecting rod in that cylinder. A little bit of water will bend the rod, and enough water will break the rod.
 
If the rod bends, the engine keeps going but may make noise and vibrate. The bent rod is weak and has shortened the stroke on that cylinder, which will eventually cause it to fail.
 
If the rod breaks, the engine also keeps going, which thrashes the broken rod around and causes more internal damage. Often the engine jams up and stops, and people often refer to it as "seized".
 
Seizing, however, is technically when the piston expands and sticks in the cylinder from overheating or lubrication failure. It is almost unheard of in water-cooled engines. Often a seized engine will move again after cooling. But if seizing is bad enough, the piston will be stuck until the engine is disassembled.
 
Many people have hydrolocked their Scions after installing cold air intakes and then driving though a little water. Scion is very familiar with claims arising from this.
#15 of 60
Re: blown xb motor.."s"??? [aatherton] by yoda8391
Jul 14, 2006 (7:37 pm)
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Replying to: aatherton (Jul 14, 2006 5:27 am)

What does scion do about these statements? Also how can you tell if there was water in the engine?
#16 of 60
Re: blown xb motor.."s"??? [yoda8391] by aatherton
Jul 16, 2006 (10:37 am)
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Replying to: yoda8391 (Jul 14, 2006 7:37 pm)

Hydrolocking is by definition caused by the owner who drove in water. The stock intake is high enough to drive in deeper water than the low intake of a CAI, and the stock air filter would probably kill the engine before water got as far as the cylinders.
 
The damage caused by hydrolocking is unique to water in a cylinder. It is like the piston meets an incompressible plug of steel, bending or breaking its connecting rod.

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