can anyone help me

[christif33]

i have 1998 tahoe it is real hard to crank when finally get it cranked it will try to bog down and recently going down the road it loses power like its outs gas changed fuel filter and fuel pump still having the problem

[H23A1Lude]

I had that happen to my Lude. Timing was off by one tooth.

[H23A1Lude]

I had that happen to my Lude. Timing was off by one tooth.

[shorod]

Welcome to the forum!

When you say "real hard to crank" are you suggesting that the starter is cranking the engine over slowly, or that it cranks a long time before starting? Did you measure the fuel pressure prior to changing the fuel pump and filter? If so, what was it? If it was low, what is it now that those were changed?

Have you recently had the rest of a tune up performed (plugs, wires, air filter checked, vacuum lines inspected)? How old is the battery and has it been load tested recently? Have you scanned the system for pending diagnostic codes?

-Rod

[partsmgn]

Try checking the battery post terminals... if they are side post (most likely are) then you should check them to see how tight they are since they are notoriuos for becoming lose.


-Matt