[eodrke]

hello... trying to figure out how to use the forum today. Have a question I am sure someone knows about doing a compression check but unable to figure out how to broadcast my question... .. thanks... kelly

 

[th3kr1s]

You just did. What do you need to know about doing a compression check?

 

[eodrke]

1. is there a preferred way to disconnect or stop the gas from injecting into the the cylinders when cranking over the engine? would pulling fuse #15??? (for the EFIs) and starting and running the engine until the fuel in the injection system runs out (relieving) the pressure on the injectors work? or is there a better way? AND

2. Do you need to do anything other than removing the coil electric clips out of the way to ensure they don't arch to ground? or will doing this cause the computer to generate some kind of error code. Not sure if there (or more likely--where) the spark fuze or relay is located?

any thoughts on the matter would be appreciated. My wife recently got her father's 2006 Matrix XR with only 50 k miles on it...one owner...never wrecked..looks almost brand new. I am in the process of doing a complete go-thru and want to change plugs etc. Thought I would do a compression check at the same time///. thanks in advance...

 

[eodrke]

forgot to mention 2006 Matrix with 1.8L motor (1ZZ. FEmotor)

 

[th3kr1s]

I would not bother doing a compression check unless you have a reason to believe you have compression loss. If you have compression loss you will most likely have a misfire. Besides at that mileage not much is needed. Spark plugs, yeah due to age of car. I would also change the coolant and drain and refill trans if they haven’t been done. Of course check over all the safety stuff, brakes, tires, suspension.

 

[eodrke]

thanks for confirming my thoughts on the compression test as the car runs really good and my father in law took it to the dealer every year like clockwork. All recalls were done and It even had a new water pump and drive belt replaced just last year so the coolant was changed then. I think I will have a tranny drain/fill (not a flush) done at it's next inspection even though the fluid is at exact level and still a nice clear red with no smell. Already cleaned the MAF, new cabin and engine filters, etc.

Probably will pull the front wheels off just to check the pad ware for something to do... I really appreciate the quick feedback...

As a side note, I bought my first NEW cat in 1977, a 77 Celica GT Liftback when I got out of the Navy the first time... Best car "I" ever owned and absolutly still in love with the Toyotas to this day... Thanks again... kelly

 

[John Anthony]

No need to check the compression. I'd go ahead and replace the intake manifold gasket with the updated Toyota OE gasket (orange colored gasket, not the black one). Verify that the radiator coolant is red or pink. Do you know why the water pump was replaced?

 

[eodrke]

The dealer "said" it was seal was weaping fluid and would go bad. My father-in-law is worse than a woman... he doesn't have a clue about automotive issues. So if the dealership says to should be addressed, he just says OK... never questions... it was probably just a gasket issue and might have been fixed with just tighting the bolts.. I will never know... all I have is the dealer invoice...

thanks for the recommendation on the manifold gasket!