[fhg959]

well, test drove it and it runs ok but lacking of power. It doesn't have any symptoms, just feels like it lacks of air or gas. I'll try to find a compression tool and o a compression test right now.

 

[fhg959]

BTW? what #s should I be looking for in the compression test? What would be normal in my car?

 

[Grumpy]

A compression check may not tell you squat. The valve timing may be out some because of your apparent lack of power........why not just remove the camshaft cover and physically check it? With the Duratec do you know how to accurately find TDC? How did you hold the crankshaft when you torqued the pulley bolt and you're sure that you torqued it to spec.?

 

[fhg959]

Right now I'm performing a compression test just to make sure the pistons didn't hit the valves. I just want to disregard that possibility. Will be back with the results soon.

 

[focusboy5]

Wow...I will never be getting pullies lol

 

[fhg959]

Cyl #1

Trial 1. 130lb (haven't used the tester in a while)
Trial 2. 148lb

Cyl #2

Trial 1. 135lb
Trial 2. 148lb

Cyl #3

Trial 1. 149lb
Trial 2. 148lb

Cyl #4

Trial 1. 137lb
Trial 2. 140lb

How does that look?

 

[fhg959]

bump

 

[jetrinka]

Looks fine. I agree with what was said above. Your timing is just off slightly. The valves aren't opening at the optimum time resulting in your power loss.

 

[MSC]

148 does not seem bad. If cam timming is off just a couple of degrees it will effect power.

 

[fhg959]

Monday morning I will start playing with timing again. I know I'm pretty close to the correct timing so it is just a matter of time. Unfortunately I was so busy trying to find the problem that I didn't notice the sound on the engine. Now everytime I start the car some knocking noise comes from the engine, a sound really similar to that of a diesel engine. After it warms up for a while the sound lowers, but if I get closer to the engine I can still hear it... Any ideas?

 

[Buickboy]

did you use the tool set CFM sells to lock the cams in place? id set it to TDC, lock it and reinstall the pulley >_> just dont drive it until you can do that

 

[bluefront]

If you're lucky, the knocking noise you're hearing may be detonation maybe from the cam timing being off, or from the crank sensor adjustment.....not anything bent.

 

[chesney09]

I know I am new here.. But ^^^^ what he said...
I'd guess it's still a timing issue.. You can got knocking and pinging from off timing causing detonation to occur at off positions. loss of power supports this as well..
But your Compression checks seem to be consistent and OK.. Consistent will, again, support timing issues vs. damage unless they were ALL damaged.
As long as you didn't damamge a bearing with the Cam... I'd still work on timing.

 

[Blackcatn2o]

Wow...I will never be getting pullies lol

Ya i agree unless i'll have a perfessanl do it then i can point my finger right at him[hah]

 

[fhg959]

did you use the tool set CFM sells to lock the cams in place? id set it to TDC, lock it and reinstall the pulley >_> just dont drive it until you can do that

Yep, I used the tool and followed instructions step by step. I think I need to lock the pulley somehow when I torque to bolt into it.

 

[fhg959]

If you're lucky, the knocking noise you're hearing may be detonation maybe from the cam timing being off, or from the crank sensor adjustment.....not anything bent.

Yeah, I was thinking that if anything was bent the compresion would be very low or none at all at least in one cylinder.

 

[bryfsvt]

I knew this was going to happen....

 

[streetracer]

im gonna be having someone else install my cfm underdrive pulleys.. lol

 

[bryfsvt]

better to let the pros do this install..

 

[streetracer]

my opinion exactly..

i gotta admit though, underdrive pulleys look like a good deal.. at least 5whp, probably more with f/i, and for $175 plus installation