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73-87 Chevy _ GMC Trucks => Performance => Topic started by: Tazman on September 12, 2016, 07:17:29 pm

Title: Like hicups ?
Post by: Tazman on September 12, 2016, 07:17:29 pm

Coming home from work on the freeway with light traffic backlogs and going about 25 to 30 mile per hour. When giving it just a little gas it stumbled or kind of like hiccupped. No check engine light came on yet it did this about a dozen times but only when going between 25 to 35 mph, when going faster it worked great. When making a turn and getting up to speed it worked great. I know this can sound like fuel pressure yet I do not understand that if it is then why does it not do it all the time?

Thanks,

Title: Re: Like hicups ?
Post by: zieg85 on September 12, 2016, 07:50:37 pm

It may be a plug wire breaking down, light load on a low rpm are a booger to track down sometimes.  Minor vacuum leak/lean miss is another possibility

Title: Re: Like hicups ?
Post by: bd on September 12, 2016, 08:07:57 pm

I agree.  A bad wire, worn or cracked spark plug, perforating coil or rotor, carbon tracking in the cap - virtually any breakdown in the ignition secondary circuit can cause this.

Title: Re: Like hicups ?
Post by: Stewart G Griffin on September 12, 2016, 09:52:07 pm

Also check both battery cables for tightness and condition.