![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Jun 2009
Location: Birdsboro, Pa
Posts: 135
|
Won't start, backfires
So I replaced the valve cover gaskets in my 69 yesterday. I steam cleaned the engine afterward and it was running great. Drove it home and parked it. Went out to start it this morning and no start. It cranks over but backfires out of the exhaust. I don't see anything loose under the hood as far as wiring or anything like that. I grounded a plug wire and it seems to have spark, still has the original points distributor. The dist isn't loose so I'm assuming it's not a timing issue. I guess my question is if the points/condenser crapped out, would that cause the engine to back fire? I'm going to do away with the points setup no matter what, just looking for some input on where else to look for a problem.
__________________
67 Chevy K20 LWB Fleetside project 85 GMC K10 High Sierra LWB, 37's, 8 lug rears, 4.10's project 86 m1009 blazer, 6 in lift, 35's, driver 69 c10, 307, long bed, 3 speed, driver 07 Dodge 2500, cc, lb, cummins turbo diesel 00 z28 camaro, ls1, 6 speed, rarely leaves the garage |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Sep 2008
Location: Cornelius Oregon
Posts: 1,073
|
Re: Won't start, backfires
Were you getting on it hard yesterday? You may have jumped a tooth on your timing gear. Or it may just be wet inside of your distributor cap. I would check the inside of the distributor to see if its wet first.
JRBECK64 |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Jun 2009
Location: Birdsboro, Pa
Posts: 135
|
Re: Won't start, backfires
Nah wasn't beating on it. I was thinking moisture in the cap but I figured it would have dried out by now. I reckon I'll have to take the cap off and have a look see.
__________________
67 Chevy K20 LWB Fleetside project 85 GMC K10 High Sierra LWB, 37's, 8 lug rears, 4.10's project 86 m1009 blazer, 6 in lift, 35's, driver 69 c10, 307, long bed, 3 speed, driver 07 Dodge 2500, cc, lb, cummins turbo diesel 00 z28 camaro, ls1, 6 speed, rarely leaves the garage |
![]() |
![]() |
![]() |
#4 |
Registered User
![]() Join Date: May 2006
Location: Wyman, Kentucky
Posts: 403
|
Re: Won't start, backfires
If you used a steam cleaner you probably have condensate in the distributor cap.
__________________
1972 GMC Jimmy, 4WD, 454 CI, 350 Turbo, 4" lift, 35" tires The math teacher said my son "Bubba" could be a mathmatical genius. cause he's got 13 fingers! |
![]() |
![]() |
![]() |
#5 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
|
Re: Won't start, backfires
To dry the cap, you can use some WD-40, which will displace the moisture. The other thing you can do is grab some toilet paper. It will soak up any moisture that is in the cap.
By the same token, you might want to take a good look at the cap and be sure it doesn't have any cracks that will allow moisture to enter, aside from the "window" that opens to adjust the points. If you have an HEI, then disregard the window comment.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
![]() |
![]() |
![]() |
#6 |
Registered User
![]() Join Date: Sep 2001
Location: Fort Wayne, Indiana, USA
Posts: 1,887
|
Re: Won't start, backfires
I agree with the moisture under the cap. They won't typically dry by themselves.
|
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Jun 2009
Location: Birdsboro, Pa
Posts: 135
|
Re: Won't start, backfires
Thanks for the replies. The problem was indeed moisture under the cap. My hei came in the mail yesterday so I put that in this morning, no more points and it runs like scalded cat.
__________________
67 Chevy K20 LWB Fleetside project 85 GMC K10 High Sierra LWB, 37's, 8 lug rears, 4.10's project 86 m1009 blazer, 6 in lift, 35's, driver 69 c10, 307, long bed, 3 speed, driver 07 Dodge 2500, cc, lb, cummins turbo diesel 00 z28 camaro, ls1, 6 speed, rarely leaves the garage |
![]() |
![]() |
![]() |
Bookmarks |
|
|