99 safari misfire

99 safari misfire

Postby since_1971 [OP] » November 8th 2010, 2:29pm

1999 safari 2 wd 178K cargo

cant get better than 15 mpg combined

was getting the dtc 300 code,

I have a consiant missfire, I think it is on #3 cylinder at lower speeds.( seems to even out at hiway speeds )

I installed the wires and sprayed the senonddary ign system for cracks.

I changed the coil/plugs/wires/cap/rotor. the cap/rotor twice, cuz I noticed a small crack, in which I think is #3 side. ( would an worn dist. cause that? )

the van had a bad cat when I got it so the problem could have been there for a while.



changed the fuel filter last year and tried to keep at least 25% of fuel in it.
have not changed the crank pos. sensor.

I sometimes smell alittle fuel after I shut it off but could not find the leak.

the mechanic wants to change the distubotor and the upper intake manifold gasket.

fuel spider?

kind of stumped here

Carl
Original Poster [OP]
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since_1971
Fueling (1/2 tank)
Fueling (1/2 tank)
Years of Membership: since_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full years
Posts: 61
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Location: providence ri
Gender: Male
Alias (AKA): since_1971
Van Make/Model: GMC Safari
Extra Info: cargo 2 wheel dr

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Re: 99 safari misfire

Postby since_1971 [OP] » November 8th 2010, 2:31pm

sorry,
ment to put this in engines
Original Poster [OP]
User avatar
since_1971
Fueling (1/2 tank)
Fueling (1/2 tank)
Years of Membership: since_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full yearssince_1971 has been a member for 11 full years
Posts: 61
Topics: 13
Joined: January 2010
Location: providence ri
Gender: Male
Alias (AKA): since_1971
Van Make/Model: GMC Safari
Extra Info: cargo 2 wheel dr


 
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