93 chevy g20 5.7 has no acceleration up hills are worse idles fine revs up fine but gets warm and nothing under a load 20mph up hill

first tell what chokes mean. (it means 2 things so I ask)
2006 never got a full tune up on the engine in 16 years./?
uphills. power loss = chokes sure.but
for example, engine misfires violently felt and heard.???
or no misfire but lacks power just like dragging 2000lb dead weight.
we call that bogging, like walking in swap or bog.
bad spark loves to fail up hills (no new spark parts) due to higher combustion pressures.
bogging is caused by low fuel pressure, the filters is packed up
or air filter never changed out. again tune up parts.

the best ACT is get the car serviced in a real shop.
tell them it lacks power on hills , hot engine
the cold engine evidence told , hints at weak fuel pressure.
EFI FPR might be bad, fuel pressure Regulator, and more to find more takes tools you do not have,.

Surges under load but only while going uphill Page1 - Chevy High ...

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Mar 6, 2011 - 14 posts - ‎8 authors
Trying to help out a friend. ... The truck starts, runs, and drives fine until you get to a hill. When going up hill it begins to surge, almost stalling but not quite. ... rubber fuel lines suck shut under a heavy load and act like that. .... tranny fluid level o.k.? ya got me stumped. runs great when it's on a flat surface?

Ford 460 engine - RV mechanic

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Will not take gas going up a hill but will maintain speed at 55 mph. ... Want to do a diagnostic test on my 1997 F250 with 460 engine. ... only get to about 40 miles an hour if i push it the engine acts like its running out of gas,thank you .... The truck hesitates on acceleration, while driving on flat surface is fine, however climbing ...

rough idle, stalling, loss of power. - CarGurus

might need a tune up, new airfilter etc .

My 2002 Malibu has not much power getting up hills and seem to be getting worse, there is about 156,000 kms on it, starts fine, my husband noticed on occasions that when going up hill no power and it revs high when attemping even slight inclines

Check the coil pack maybe braking down under a load.unplug each plug to see if there is any change may have week pack.if no change do a compression check on all cylinders.

Have the fuel pressure checked the fuel pressure regulator valve may be acting up, it should be at 30 psi or greater at idle. It may also be a Oxygen sensor causing the car to run lean on acceleration, if it has never been changed have the primary or bank 1 O2 sensor changed out they should be done every 60,000 - 80,000 miles. If all this has been done there may be a vacuum leak somewher in the system and by the way all vacuum hoses should have been checked during the tune up.

good chance you have a clogged cat converter ...with engine running have someone rev engine and see how much flow you have out tail pipe. also if you hear the sound of something rattling inside exhaust that is another tell tale sign

Im having the same issue I believe. I have a 94\' Chevy 1500 and when i accelerate it will jerk like the gas has cut out but it wont stall. It just jerks and slows me down. It only seems to do it when going up a hill. I feel like it could be the fuel pump or possibly some intake gaskets?

it might be possible that the thermostat was put in upside down