1997 Daymon Daybreak no power need help

[ashlatz]

Hello All

I am in need of so desperate help. I have a 1997 Daymon daybreak with the Chevy 454 motor. We are having an issue with loss of power . We changed the fuel filter, checked the Airfilter, performed a tune up, checked for vacuum leaks and engine codes with no luck . The unit stumbles and hesitates (worse when it's cold) apon acceleration . It has no power up hills however we can get to 65mph plus on flat ground. Does anyone have any ideas as to what I might try . Thanks for all the help in advance

[DSDP_Don]

If you end up dropping the tank, make sure you take the time to replace all the hoses. Not a job you want to do twice.

[ashlatz]

Thank you Richard do you know what the fuel pressure should be at the rail so we can determine if the fuel pump is indeed the issue . Trying to avoid dropping the tank unless i have too

[RLS7201]

ashlatz wrote:
Hello the unit is throttle body/injection . We haven't checked the state of the coil but all other tune up parts where replaced . Sitting at an idle the engine runs smooth

Chevy went to port injection on their class A chassis in 1996. You may want to rethink your fuel injection response.
There is a port on the fuel rail for checking the fuel pressure.

Richard

[ashlatz]

Hello the unit is throttle body/injection . We haven't checked the state of the coil but all other tune up parts where replaced . Sitting at an idle the engine runs smooth

[MountainAir05]

Fuel pump or coil. Take a fuel pressure reading. Helps to know if Carb or fuel injection/throttle body.

I assume that with the tune up , cap, plug, rotor , wires and as state check the coil.

[ashlatz]

Hello yes I forgot to mention that I checked the catylitic converter . It's good

[hanko]

check the catalytic converter to make sure is hasn't plugged up

[darsben]

Try this thread
http://forums.motorhomemagazine.com/index.cfm/fuseaction/thread/tid/27900410.cfm
or
http://forums.motorhomemagazine.com/index.cfm/fuseaction/thread/tid/27668067.cfm

[ashlatz]

Also the guy working on it for me says the fuel has an odd smell to it ?

[ashlatz]

Also is there a way to test the fuel pump to determine it is indeed bad before we drop the tank ? If so what psi or something should Inbe looking for and how to test it?

[ashlatz]

Hello Thanks for the info . When it's cold even when I first step on the gas it does stumble . It does seem to get better once the engine is warm . I am pretty sure the engine even popped couldn't tell if it was exhaust or intake . It only did this when it was cold though

[Mandalay_Parr]

DSDP Don wrote:
Sounds like a fuel pump....it starves upon hard acceleration and hill climbing, but provides enough fuel for gentle acceleration and flat road driving.

X2

[DSDP_Don]

Sounds like a fuel pump....it starves upon hard acceleration and hill climbing, but provides enough fuel for gentle acceleration and flat road driving.