steve56

Ac pump clutch starting and stopping with ac switch off. Doesn't blow cold with ac switch on either.

How can the valves bend, if the never came in contact with pistons?

Yes Pulling the exhaust valves looks like the next step. Is there an accurate method to test how the valves are seating while still in the heads..I've seen it done with mineral spirits poured over the valve faces and checking what leak underneath the valves?

With timing belt installed.. Drivers side cam arrow at 12 o clock, front cylinder leak down test at 100 psi..Then drivers side cam arrow at 3 o clock, rear cylinder leak down test at 100psi. Then passenger side cam arrow at 6 o clock, front cylinder leak down test at 100 psi. Then passenger side cam at 9 o clock, rear leak down test at 100 psi. I was getting 80% leakage.through exhaust port of cylinder tested.. I've only done a couple other leak down test, on a different Subaru engines..For those tests I started on the drivers side front cylinder, leak down test at 100psi . Then rotated the engine from crank bolt with long 1/2 inch ratchet wrench until I was getting air resistance in the cylinder. Then keep rotating the engine with ratchet wrench until I got to tdc of compression stroke. Then compared difference of the leak down testers two gauges. So for example, with inlet gauge at 100 psi and the second gauge at 95% psi that cylinder would have a 5% leak.. Since I've only done a few leak down tests,. Based on the results of my current leak down test, I've got to be doing the test incorrectly.

Yes, but I have 80% exhaust port leak from leak down on all four cylinders.

Yes, Understood what GD meant about the rings.. I was getting 80% exhaust port leak on leak down test on all cylinders. Thought for sure I was going to see valves had come in contact with pistons, but they hadn't. To get an accurate pressure test do I need to loosen the cam bolts to get all the pressure off of the valves?

Yes , But I was getting 80% leak down on all four cylinder exhaust ports. Where would that come from.. Exhaust valves didn't make contact with pistons. and dont look bent, Very confusing to me.

Just pulled the drivers side head.Don't see any contact between valves and pistons. The water pump bearing is bad and hardly turns. Dont see how that would have anything to do with bad leakdown results though.Head gasket looks fine.

Thanks GD You always have great advise.

II'm using .080 inch gauge for intake and .010 inch gauge for exhaust.

Just rechecked cylinder one at the 12 cam arrow position and cylinder three at the 3 cam arrow position and both have .010 valve lash..

Thought turning the crank 720 degrees with the leak down tester set at 100psi in any spark plug hole,I should get tdc and accurate leak down percent..

Hi Fairtax.It was hit in the front.The belt and all belt idler pulleys are intact.,There was a broken drivers side outer tbelt cover and the drivers sides cam pulley is worn on one side, I can do a complete crank shaft rotation with the leak down tester in any cylinder and there is 80% leakage at throttle body and exhaust ports on all cylinders.

The only thing that makes sense to me is, the timing belt snapped and someone put it back on.

No compression test engine out of car.

Timing belt is on, timing mark are lined up, yet failing leak down test on all cylinders. Have air leaking at throttle and exhaust as crank pulley is rotated. Is there anything I might be forgetting to check before I pull the heads.This is a Copart engine and has broken timing chain cover,

First code is: coolant temp sensor circuit high voltage. Second code is: p0700 Transmission Control Malfunction Great call. The coolant temp sensor was unplugged. Plugged it in and it started right up. Thank you.

Reinstalled engine after doing head gaskets. Its turning over and getting fuel, but not starting. Haven't checked for spark yet because dont have a helper to turn it over. The cruse control light is on and cooling fans are running with the key on.

Yes I thought the older Subarus just used hose clamps on the fuel lines.Thanks for verifying. The ac metal line must have gotten bent down from the ac pump being disconnected.Is it safe to bend it back without causing a freon leak in metal hose?

Reinstalling 2005 Impreza engine. Didn't do the engine removal. The top fuel line disconnect not clicking back in to the fuel line..The fuel line disconnect below the upper fuel line is clicking back in. Is the plastic piece in the disconnect a replaceable piece or could the disconnect be replaced with a gas hose clamp.? Also the ac line seems to run directly above the oil filler cap which makes it difficult to remove the oil fill cap. Since I didn't do the the engine removal not sure where the ac line is supposed to be relative to the oil fill spout and cap.

Thanks for the info. I like Subaru, but sometimes it gets kinda pricey, Napa is a lot closer for me too.

Thanks for the info.Appreciate it.

I'm doing about six engines a year.Just curious if anyone used an o-ring kit that contain the most used Subaru o-ring sizes.

Availability of Subaru o-rings kit .Need another set of coolant cross over pipe o-rings. At $5 a piece was wondering if there is an o-ring kit available that would have the most common o-rings sizes.

Interesting.How do you install a timing belt correctly?