Question '90 Ford E350 w 7.3L IDI Won't Start Hot

TheHighwayman

SDD Junior Member
Joined
Sep 29, 2006
Messages
9
Reaction score
0
Location
Culpeper, VA
Hello,

We have a 1990 Ford E350 Ambulance with a remanufactured 7.3L IDI engine. The truck is pushing 300,000 miles. When starting it up after its been sitting for awhile and the engine is cold it usually starts fine. Then you go drive it down the road and back, shut it off, and it won't start. The engine will turn over for a few seconds, but it won't start. Put the jumper cables on, and it still won't start. It will only start if you let it sit for awhile (1 - 3 hours) or if you shoot some ether into the intake. Same thing if you have driven for an extended period of time. Shut it down and sometimes it won't start.
Any ideas? We took it to a local shop last year and they replaced both batteries and checked the charging system when it was having this problem. Changing the batteries didn't help. Changing the glow plugs didn't help. (My boss still thinks the glow plugs are bad. I saw the glow plugs are NOT the issue because it can be 95 degrees outside and the engine is warm from driving 90 miles and you shut it down and it won't start.) Fuel pump? Any ideas? It just came back from the local shop, and we still have the same problem. The shop couldn't find anything wrong. Help! :dizzy
 

FordGuy100

Full Access Member
Joined
Aug 16, 2006
Messages
62
Reaction score
0
Location
Silverton/Oregon/USA
This is one of the classic signs of a bad IP.

Here is a test, when it does this to you again, go and pour around 12 ounces of luke warm water on the IP, if it starts, then you are 100% sure you need a new IP or rebuild that IP.
 

TheHighwayman

SDD Junior Member
Joined
Sep 29, 2006
Messages
9
Reaction score
0
Location
Culpeper, VA
Thanks! I had a feeling it was the injection pump... I will try the lukewarm water test next time it acts ups, which will probably be the next time I get in it.
 

Members online

Forum statistics

Threads
30,512
Messages
266,061
Members
14,625
Latest member
woodrow58
Top