|
|
|
#1
|
|||
|
|||
'72 300 SE L 4.5 - Trouble starting when hot
The Green Machine, as I call it, runs outrageously well and starts right up every single time...except when I try to re-start it after experiencing stop and go city traffic when the engine gets warmer than usual cruising temps. When it does happen, it seems to fire up only a few cylinders while the starter is cranking...eventually it does start up after a couple backfires...again, it only happens when I re-start the engine after experiencing stop/go traffic...otherwise is never happens. Any idea what to target?
|
#2
|
||||
|
||||
Tony: Check out this other thread, maybe it can help with ideas:
72 280SE 4.5 idling issues Yours sounds more like a maladjusted mixture if it will start hot eventually and, when it does, it does run fine. bullit's sounds more like vaporlock... Check my post where I suggest possibly adjusting the idle mix.
__________________
Current: 2021 Charger Scat Pack Widebody "Sinabee" 2018 Durango R/T Previous: 1972 280SE 4.5 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k |
#3
|
|||
|
|||
If this car has a Bosch CIS K-jetronic fuel injection system, hot start problems are most often caused by a bad check valve in fuel pump or possibly a bad fuel accumulator. Both these parts help the system maintain fuel pressure when the car is shut off when hot.
Brett
__________________
1997 S600 sedan |
#4
|
||||
|
||||
I think this is a D-Jet car and do not believe there is a fuel accumulator. Dunno about a fuel pump checkvalve. Others here will certainly wiegh in soon with ideas.
|
#5
|
||||
|
||||
There is no accumulator. It is a possibility the regulator and/or fuel pump checkvalve are gone, but the initial fuel pump pressure is USUALLY enough to bring the system up.
__________________
Current: 2021 Charger Scat Pack Widebody "Sinabee" 2018 Durango R/T Previous: 1972 280SE 4.5 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k |
#6
|
|||
|
|||
check for rest pressure
Hi..had a similar problem, need to get a fuel pressure gauge (best place in line with the csv) check for rest pressure if not there then you will need to check for leaks...if no leak (like my situation) then the check valve could be gone or could have metal particles stuck (my situation ) get it cleaned and presto rest pressure is back no more hot start lucky dip
cheers from oz |
Bookmarks |
|
|