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Thread: 6.5 turbo starting issues

  1. #1
    Join Date
    Dec 2019
    Location
    Shelby n.c
    Posts
    1

    Default 6.5 turbo starting issues

    I have a 1984 c30 I done a 6.5 Td swap on new starter and new batteries I can turn engine over with breaker bar no issues but when I attempt to crank it drags very slowly I’ve checked all my connections the only thing I haven’t checked is the starter between engine block to make sure it’s clean any advice would be greatly appreciated

  2. #2
    Join Date
    Jan 2001
    Location
    Knoxville,Tennessee
    Posts
    2,639

    Default

    Is the nose brace on the starter?
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
    -Patrick Henry


    A5150nut
    2006 K3500 D/A
    94 6.5 4x4 5spd Sold

  3. #3
    Join Date
    Jan 2005
    Location
    Denville,New Jersey
    Posts
    424

    Default

    Mine did that about 5 years ago. Using an AC Delco Starter solved it.
    94 Chev Blazer, 6.5TD, 3.42, 4WD,Gear drive,,Remote FSD behind drivers headlight,,Mobil 1 in difs and trans,Rotella 30W, Over a quarter of a million miles !! Member -1.94 club.

  4. #4
    Join Date
    Feb 2003
    Location
    Grand Rapids MN 55744
    Posts
    1,648

    Default

    Howdy
    The starter should be clean between the block.
    NEW bolts used and torqued to spec.
    Make sure the nose bracket is in place and TIGHT.
    Check ALL your cables. IMHO....If they are old at all, Replace with heavy gauge welding cable and industrial electrical grade crimp ends.
    Battery and ground connections need to be checked.
    The quality of the starter can also be a problem, NEW AC Delco is what I have the best luck with. expensive....but they work.
    Hope this helps!
    1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
    1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
    2001 Chinook RV, V10 gas
    1974 John Deere 1530 diesel tractor
    1993 John Deere 455 Diesel lawn mower
    1967 GTO, 1989 Honda Transalp
    2009 VW Jetta TDI, flashed and piped, 6speed, fun car!
    1998 6.5 suburban, stock, daughter's
    1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's

    1984 6.2 ATS turbo 3500, SCDWLB - Son's
    3 kids, 1 wife, 1 dog
    Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!

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