Fuel injectors. i have changed 4 already, and every 2 to3 months another goes.gets costly. are the injectors bad on this model or should i flush or buy a new tank because **** is getting past both pump strainer filter and in line filter. have changed in line filter 4 times as well.have had differnt stories to change them all at once and flush the tank any suggestions much appreciated.cheers 2001chev silverado 1500 ls series 5.3 lt vortec 4x4

SOURCE: hesitation off the start but then goes away, also in reverse

sometimes using a fuel additive might help. K44 i think is what it is called helps clean the injectors....hope this helps

SOURCE: when i try to start my 97 silverado it takes like

Check the fuel pressure - you should have 45 - 50 psi of fuel pressure when you turn the key on - this is immediate. If it takes more than that or it takes awhile for the fuel pressure to come up you need a fuel pump.

SOURCE: keep burning up fuel pumps

Don't buy carter pumps for sure, I know champion makes a damn good pump, but you might want to do some research for yourself. remember you get what you pay for and just replacing the fuel pump is a pain in the @$$ so spending alittle extra for a quality pump is worth not having to change it again

SOURCE: Engine runs extremely rough, seems to be fuel

Have you changed the plugs, if any are fouled out or if any are worn, it takes more to fire it under load and may be spark knocking because one of the plugs can't fire off all the gas and cause it to skip or idle rough.

SOURCE: 1999 5.3 vortec silverado 4x4. Engine intermitient hard start.

Had a similar problem and turned out to be a fuel regualtor.
Be careful with the little o-ring. Tricky little devil.
There may be residual pressure in the line so be careful you don't take a shower in gasioline.

It was hard to start after warm up. Rough idle until driving. Then on shut off it was hard to start.