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5.0 Power struggle issues 

 

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 Post subject: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 7:00 pm 
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Ride: El Futura 5.0i

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Hi Everyone, I hope someone can help me. My EL 5.0 is frustrating the hell outta me.
The problem I have is when I put my foot flat to the floor in my car it struggles and is hesitant, when I lift my foot a little the power seems to increase. I have fitted new plugs,leads,dizzy cap and rotor, fuel pump. I have checked the tps setting. I am at a loss as too what the problem is, It feels like it is starving of fuel. Any ideas/suggestions would be greatly appreciated :?

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 7:54 pm 
Getting Side Ways
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Do a fault scan, KOEO, KOER, Cylinder balance. This will highlight problems or eliminate many things. It should ALWAYS be the first thing done. The onboard fault logging is very powerful.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 8:01 pm 
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Change your fuel filter.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 8:04 pm 
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Ride: Black EB 5 Speed EL Front End

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also check airflow meter

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 8:26 pm 
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Ride: El Futura 5.0i

Location: Perth, South
WA, Australia

I have fitted a new fuel filter. How do I check the airflow meter other than a visual(its clean)
Is there any way I can check log codes myself. My local dealer isnt very helpful and this site has been gold for me for the past four years :D
The lack of power i am experiencing is only at wide open throttle.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 8:34 pm 
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Unplug maf and see how it goes.

Check timing.

Check throttle body blade is opening all the way.
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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 8:45 pm 
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Checked throttle body and its opening and closing as it should. Im not sure what the timing should be. Engine has a few mods including flat top pistons, roller rockers, balanced. Heads are stock. Cam is stock.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 9:04 pm 
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Well if you have replaced both the fuel pump and the fuel filter then I'd check the timing.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 9:05 pm 
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Timing should be 30* + or - 2*
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 Post subject: Re: 5.0 Power struggle issues
Posted: Sun Sep 12, 2010 9:08 pm 
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RAPTOR_XR8 wrote:
Timing should be 30* + or - 2*

Thankyou, I will check timing and see how that goes

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Mon Sep 13, 2010 12:30 am 
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Dont forget that it has to be in self test mode when doing the timing.
Also bump it to 34-35 degrees and run 98 fuel.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Mon Sep 13, 2010 1:14 am 
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Yeah up the timing thats a great idea considering its running dif pistons + he hasnt said what comp ratio hes running.
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 Post subject: Re: 5.0 Power struggle issues
Posted: Mon Sep 13, 2010 7:51 am 
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RAPTOR_XR8 wrote:
Yeah up the timing thats a great idea considering its running dif pistons + he hasnt said what comp ratio hes running.


If it pings, drop it back down. Its not rocket science :roll:

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Mon Sep 13, 2010 10:11 am 
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RAPTOR_XR8 wrote:
Yeah up the timing thats a great idea considering its running dif pistons + he hasnt said what comp ratio hes running.


It is high compression, 10.7-1 i think, ACL Race series engine kit flat top pistons,1.72 ratio roller rockers, Crow 7333 double valve springs. I run 98 octane in it because it is high compression.

 

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 Post subject: Re: 5.0 Power struggle issues
Posted: Mon Sep 13, 2010 11:44 am 
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Maybe because its a 5L :P
I would probley go the timing first aswell. Did you try Unpluging the maf?

 

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