99 2500 suburban hard starting, 454
#1
Registered
Thread Starter
Join Date: Oct 2000
Location: Chicago, now Fox Lake, Illinois, USA
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
99 2500 suburban hard starting, 454
Sub is hard to start when cold, takes 5-8 seconds of cranking to start. New plugs, cap, rotor, gas filter & wires. Only searches on internet I could find suggested fuel injectors are dirty. Anyone have history with this problem. Mileage 75,000, 4x4. Thanx in advance, Bill.
#2
Registered
Join Date: Aug 2004
Location: Sunny, AZ
Posts: 1,182
Likes: 0
Received 0 Likes
on
0 Posts
Re: 99 2500 suburban hard starting, 454
Most likely your fuel pump getting weak. After it sits the system looses prime & pump being weak takes longer to get up fuel pressure to start. These are very common problems on those late 90's Vortec motors. They are trying to push so much pressure they just don't last long.