2001 Volvo Cummins N14 not starting up right away.

I'll buy one and change it and see how it goes. Thanks.

 

Update, I found the source of the problem of the Hard Starting, it was the Davco 382 causing the issue. Even though I replaced the most common problem parts, like Top Collar O Ring, Check Valve, there was something else causing it to suck air as I noticed that when the engine was running there were a lot of bubbles in the bottom of the Davco, next to the Top Collar which it never did before. I asked my Mechanic on Thursday and he said it was normal, but I never noticed any bubbles there before.

So Friday morning I woke up and noticed the Davco was leaking fuel from underneath and it was coming from a big Hexagon Nut that is located underneath the bottom plate of the Davco. I've looked up everything I could find about the Davco in the last few weeks and I never read or spoke to anyone regarding that part as being Serviceable, so I called Davco up and told Tech Support my issues I've been having. I told him that the Hexagon Nut was leaking fuel, he told me that part has a O Ring on it that might be leaking and needs to be changed. He gave me the part number which is AS 568-914, (it is not a Davco Part#) and I found a business (O Rings and Things) in Fontana, CA that specializes in O Rings that had it for 25¢. (What a deal!!!!)

I also asked him if the Bottom Collar used the same size O Ring as the Top Collar , he said the bottom one was a different part number (Davco Part#101994) so I bought a new one at the Volvo Dealer.

So today I decided to tackle this myself, after going back two times to try to solve this problem my Mechanic was of no help. I took apart the Davco, unscrewed the big Hexagon Nut underneath and replaced the O Ring on it. The old one was all dried up, shrunken, hard and brittle. I replaced the Bottom Collar O Ring with the new one and reassembled it.

I filled the Davco with fuel and started it up, it cranked for awhile because of air in the system and then it started up. Well what I really wanted to know is how would it crank after it's been running for awhile, so I let it run for 5 min and shut it off and let it sit for about 15 min. Now for the real test, I turned the key and the engine started within 2 seconds like it normally used to, I tried it again numerous times over the course of the last six hours and it still fires up within 2 seconds like it used to, no more hard starting, no more bubbles in the bottom of the Davco when running either, problem solved.

The problem was the little 25¢ O Ring on the Hexagon Nut, it must have been sucking air through the old O Ring causing the engine to lose prime, which caused the hard starting issue.

The good thing was I found the problem and fixed it myself, the bad thing was I paid my Mechanic $170.00 to find and fix the problem, and after going there three times including the first time they never solved the problem.

Thanks everyone for your suggestions and advice, all was considered and appreciated.

Take care and be safe out there!!!!!!