When cold in morning starts and runs fine once hot takes bout 25 seconds turning over before starts then has like a diesal knock done non return valve new fuel pipes filter put lift valve

Have someone crank it while you bang on bottom of fuel tank. Fuel pumps dont like running out of gas it keeps them cool and lubed

Sounds like the cold start solenoid. It is designed to keep the engine running at a set RPM until it reaches a specific engine temp.

Take your starting modulator in for testing. Make sure a pat test is performed. Pat test are to see if bouncing down the road is causing problems.

cold start selonid bad or no signal from computer

Personally, if it's only a second or 2 when cold, I wouldn't worry about it, other than be sure not to rev it when first started. I've heard many engine do the same, and last a long time. If manual says 10w30, then that's what I'd run in it. What you have to think about, is when you go from 10w, to 20w oil, it's thicker and will take a little longer to get to those critical areas when cold. It may protect a little better when warm or hot, but start-up cold, is more important, as you want the oil to be able to flow fast when cold. If manual recommends 10w30, go with that. I usually will use 10w30, in winter, then 10w40 in summer. Gives you added protection on hotter days, but does not take away from cold start protection.

check oil level,make sure oil is not too thick,eg;is temp cold when starting? rattles when cold?

First check for water in fuel.

check fuel pump relay/should run pump for two sec when key is turned on. try turning key on but dont crank did pump hum/if it did look towards leaky fuel inj./faulty pressure reg. poss clogged fuel filt.

engine oil leaking past injector O rings and going into fuel return hose back to tank contaminates tank. if recall done are O rings ok? can put clear plastic tube on return fitting in rear of head to see if black (contaminated with oil) or air leaks, from cold start, it isnt high pressure
it could be from before or now?

Fuel pump: The vehicle is sensitive to fuel starvation caused by a clogged in-tank filter. (1991-96)