454 mag mpi lack of power? Idles and revs fine, no miss
#21
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iTrader: (1)
[ATTACH=CONFIG]541125[/ATTACH][ATTACH=CONFIG]541126[/ATTACH]
oh, and rotors looked different??
The P looked older?? the S looks like the diagram, So dont know if they even changed the rotor when they replaced the engine or just a different kind? Has only 1 contact and the S has 2?
[ATTACH=CONFIG]541128[/ATTACH][ATTACH=CONFIG]541127[/ATTACH]
oh, and rotors looked different??
The P looked older?? the S looks like the diagram, So dont know if they even changed the rotor when they replaced the engine or just a different kind? Has only 1 contact and the S has 2?
[ATTACH=CONFIG]541128[/ATTACH][ATTACH=CONFIG]541127[/ATTACH]
http://www.amazon.com/ACDelco-D447-O...1XK9SJMYPHA7XW
#23
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Thread Starter
C1000, I didnt post.. Never checked fuel pressure... Dont know how/ never did it before... How do I go about that, I assume, I will need a guage? I will google to see also...
#24
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Didnt do the S as I thought I read that was what it was supposed to be. (Not sure I'll ever use a fuel pressure guage again, but $45 later, I have one!)
#25
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Ok, I officially know how to test fuel pressure. both engines read 38 psi when keyed. P runs same at idle and when I bump it, it slightly dips to around 36psi..
Didnt do the S as I thought I read that was what it was supposed to be. (Not sure I'll ever use a fuel pressure guage again, but $45 later, I have one!)
Didnt do the S as I thought I read that was what it was supposed to be. (Not sure I'll ever use a fuel pressure guage again, but $45 later, I have one!)
#26
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Ok I would suggest to leave the gauge hooked up and see were the pressure goes when under a load, and at WOT. Possibly falls off at higher rpms? don't know if it is your problem but if the pressures are ok you can then rule it out! I also think that any tool is a good investment!
She seemed to run better. I cranked up the S and pushed each throttle up to about 2500 and it seemed to have same throttle response. (in gear)
I had fuel guage hooked on P and she stayed steady at 38-40 for whatever I did. idle, throttle in Neutral and throttle in gear.
I will have to run her in the lake to see.. oh, I am getting a leak in bilge too... Just changed pivot pins so maybe I have a bellow leaking now.... oh well
#27
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Well, I brought her back to launch to try to find leak.
Sons a b!Tch, its coming from the S side (where is was leaking from pin) last summer. Well, looks like it was also leaking from cable bellow!!! AAAAAHHHHHH!! I have these lil b!tches at my house. They took 3 weeks to come in when I was changing out both pivot pins!!
They looked good, so i didnt think they were leaking and put it back together as I was excited to get them back together and test steering slack..
WELL, I got back to the house and turned hard to P and trimmed up that side and some water came out the inner flex of the shift cable...
On good, note the S engine seems to be running better when I poured the coals to it on the launch! :-)
Sons a b!Tch, its coming from the S side (where is was leaking from pin) last summer. Well, looks like it was also leaking from cable bellow!!! AAAAAHHHHHH!! I have these lil b!tches at my house. They took 3 weeks to come in when I was changing out both pivot pins!!
They looked good, so i didnt think they were leaking and put it back together as I was excited to get them back together and test steering slack..
WELL, I got back to the house and turned hard to P and trimmed up that side and some water came out the inner flex of the shift cable...
On good, note the S engine seems to be running better when I poured the coals to it on the launch! :-)