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Username Post: 1965 409 hard to start        (Topic#362584)
Posts: 19

Age: 80
Loc: Central Florida
Reg: 07-12-15
09-15-20 12:23 PM - Post#2803517    

I have a 1961 impala with a 1965 409 engine. I am having a problem starting the engine. If the car sits for one or more days it is very hard to start. I pump the peddle sometimes 5 or more times and sometimes it will start and sometimes I hold the peddle all the way to the floor. So far I have replaced the starter, added a check valve on the fuel line just before the mechanical fuel pump, new carbs. If I remove the air cleaner, look down into the top of the carb. and pump the throttle I do see the gas squirting. The fuel pump is not leaking but it is a small block pump which I understand is OK to use on a 409. Any ideas would be appreciated.


Frequent Contributor
Posts: 1004

Age: 60
Loc: Burnaby BC Canada
Reg: 09-22-14
09-15-20 05:45 PM - Post#2803538    
    In response to 54BelairSC

Maybe a float bowl is leaking
Is there evidence of fuel on the intake?


65 Impala SS Evening Orchid convertible 283 2V with Powerglide and 10 bolt 3.08 open by PO, originally 3.36
Build date Dec. 21 '64 Oshawa

"3rd Year" Gold Supporting Member
Posts: 157
Loc: Brevard, NC
Reg: 05-14-18
09-16-20 09:22 AM - Post#2803578    
    In response to Oshawa65SS

once running... is all ok? Idle, acceleration, etc? How's your vacuum, sparkplugs, wires, etc? When it does start, do the spark plugs "Spark" (i.e., pull each plug, checking both engine block ground and the ignition coil in the process?). Are you still using points?... check dist cap... clean and no moisture?


Mark - Brevard, NC - 66 Impala SS RestoMod
>>My detailed build thread link <<

Posts: 47

Reg: 09-03-18
09-16-20 02:21 PM - Post#2803597    
    In response to MarkISS

What's the base timing?


65 Impala convertible 327/250 Maderia Maroon/black California black plate car

A White Sport Coupe 
"10th Year" Silver Supporting Member
Posts: 433
A White Sport Coupe
Reg: 08-19-10
09-16-20 03:37 PM - Post#2803604    
    In response to 54BelairSC

Hi Belair

Is your choke working properly? Should be closed when cold. Fully open when hot.



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