Ping noise & slow to go | 356 Speedster, 550 Spyder, Replica, Automotive Community

I got a 1600cc dual-carb engine. I got the car Monday and it was running ok until today. It did seemed like it was holding back before but today it started to really act up. The car began to make a pinging noise as well as was slow-to-go when accelerating. I was driving slowly for about 30 minutes through neighborhood roads. I was thinking that maybe it was overheated but when I let the car sit for an hour and restarted it, it made the same noise. Do you think this was due to overheating, valves, or what?? Any advice would be greatly appreciated! Thanks.

3/19/045:11 PM

Original Post

Replies sorted oldest to newest

I got a 1600cc dual-carb engine. I got the car Monday and it was running ok until today. It did seemed like it was holding back before but today it started to really act up. The car began to make a pinging noise as well as was slow-to-go when accelerating. I was driving slowly for about 30 minutes through neighborhood roads. I was thinking that maybe it was overheated but when I let the car sit for an hour and restarted it, it made the same noise. Do you think this was due to overheating, valves, or what?? Any advice would be greatly appreciated! Thanks.

MASSIVETYPEIV

pinging is caused by detonation. Many things can contribute to it. detonation is the worst thing that can happen to an engine..

Have the engine checked by a mechanic before it is driven any further.

Former Member

check your dist, is possible that the timing shifted if the retainer clamp was loose

Former Member

Sounds like maybe crud plugging a carb jet - lean mixtures promote detonation.

<div id="{%=id%}" class="reveal-modal small h-alert-modal-popup" data-reveal>
    <div class="first-modal-focus focus-utility-element" tabindex="0" aria-label="Inside Modal"></div>

<h4 id="{%=id%}_title" class="margin-bottom-10 popup-title"></h4>
    <div id="{%=id%}_body" class="margin-bottom-10 popup-body">
        </div>

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>